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HomeMy WebLinkAbout2008-11-11 FFE Drainage Summary for Carriage House CooperativeFolz Freeman, Erickson, Inc. MEMORANDUM Project: Carriage House Cooperative From: Vicki VanDell Date: 11 -11 -08 Bruce A. Falz, LS 1939 -2001 LAND PLANNING a SURVEYING 4 ENGINEERING To: Karen Erickson — Bonestroo; Pete Young - MSCWMO Re: Drainage Summary for Carriage House Cooperative Oakgreen Village was approved in 2006. At that time, Phase 11 of Oakgreen Village was anticipated to be additional townhomes. After the Oakgreen Village approval, the Goodwill project was brought forward. This project enlarged Pond 1 to incorporate drainage areas P7 and P7a into the pond. The Carriage House Cooperative is being proposed in lieu of the additional townhomes on the east side of Oakgreen Village largely in part to the changing market. We have revised the drainage calculations to match the revised plan and we have summarized the high water levels and flow rates for all three phases of this drainage analysis. Although we have a slight increase in high water levels for Pond B2, the high water level is still well below the lowest opening of 945.8. Our proposed design maintains an emergency overflow of 944.8, 1 foot below this lowest opening. Pond 1 has decreased in high water level and flow rate from the original Oakgreen submittal. So, although pond B2 bounces slightly higher it is still well below the emergency overflow and lowest opening. If you need more information or have any questions, feel free to call me at 651 - 439 -8833. 12445 55th Stteet North, L.a/cc E1xz o, MW 55042 • .Phone; (651) 439 -8833 • Fax: (551) 430.9331 • ebsitc: w ,fe- inc.com 3" nathyy. Freeman, L5 Tocdd A. Erickson, PE Principal 24-Hour ..._. , Storm Event B2 Pond 1 100-year (cfs) 6.01 2.50 HWL (ft.) 937.74 932.94 24-Hour ..._. , Storm Event B2 Pond 1 100-year (cfs) 5.49 2.56 HWL (ft.) 937.35 933.50 — ..._. , 100-year (cfs) 5.85 2.50 HWL (ft.) 937.21 932.92 Carriage House Co-op - Oakgreen Village Pond Proposed Discharge Comparison 11/11/2008 Oakgreen Village Goodwill 24-Hour Storm Event 11 B2 Carriage House Pond 1 Prepared By: FFE, Inc. 11/11/2008 FILE NO. 05-104 is unlimm 71.11,2, !I r7 ) - EA (P2) P3� Reach Pond Link 7 €4 EX CB CB 4 ( B2 Pond B5 CP P6> Drainage Diagram for Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc., Printed 11/11/2008 HydroCAD® 8.50 s/n 002112 ©2007 HydroCAD Software Solutions LLC Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. Printed 11111/2008 jydroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Page 2 Area CN Description (acres) (subcatchment- numbers) Area Listing (all nodes) 22.081 58 Meadow, non - grazed, HSG B (P10,P2,P3) 1.831 58 Woods /grass comb., Good, HSG B (P4,P5) 1.681 60 Meadow, non - grazed, HSG B (P6) 8.321 61 >75% Grass cover, Good, HSG B (GW1,GW2,P5,P6,P7,P7A) 7.261 64 (P9) 2.756 66 (P1) 0.464 85 Gravel roads, HSG B (PTA) 0.604 98 Building (P3,P4) 10.466 98 Paved parking & roofs (GW1,GW2,P10,P3,P4,P5,P7) 4.860 98 Paved roads w /curbs & sewers (P6) 0.938 99 Pond (P4) 0.226 99 Water (P5) 1.397 100 Pond (P10,P3,P6,P7A) 62.886 TOTAL AREA Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 ©2007 H droCAD Software Solutions LLC Area Soil (acres) Goup 0.000 HSG A Subcatchment Numbers Soil Listing (all nodes) 34.378 HSG B GW1, GW2, P10, P2, P3, P4, P5, P6, P7, P7A 0.000 HSG C 0.000 HSG D 28.508 Other GW1, GW2, P 1, P10, P3, P4, P5, P6, P7, P7A, P9 62.886 TOTAL AREA Carriage House Total Hydrocad inf Prepared by FoIz, Freeman, Erickson, Inc. H droCADO 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Subcatchment GW1: Subcatchment GW2: Subcatchment P1: Subcatchment P10: Subcatchment P2: Subcatchment P3: Subcatchment P4: Subcatchment P5: Subcatchment P6: Subcatchment P7: Subcatchment P7A: Subcatchment P9: Pond B1: Pond B2: Pond B3: Pond B4: Pond B5: Pond CITY POND: Pond EX. CB: Pond Pond 1: Time span= 0.00 -30.00 hrs, dt=0.01 hrs, 3001 points Runoff by SCS TR -20 method, UH =SCS Reach routing by Sim -Route method - Pond routing by Sim -Route method Type II 24 - hr 0.5 Inch Rainfall =O.50" Printed 11/11/2008 Pa • e 4 Runoff Area= 92.429 sf 87.87% Impervious Runoff Depth = 0.14" Flow Length =250' Tc =6.8 min CN -94 Runoff=0.49 cfs 0.024 af Runoff Area= 37.462 sf 35.82% Impervious Runoff Depth = 0.00" Flow Length =280' Slope = 0.0200'1' Tc =10.6 min CN =74 Runoff =0.00 cfs 0.000 of Runoff Area= 120.067 sf 0.00% Impervious Runoff Depth = 0.00" Flow Length =207' Slope = 0.0200 7' Tc =9.5 min CN =66 Runoff =0.00 cfs 0.000 of Runoff Area = 310.366 sf 21.52% Impervious Runoff Depth = 0.00" Flow Length =690' Slope= 0.0250'1' Tc =21.6 min CN =67 Runoff =0.00 cfs 0.000 of Runoff Area = 545.736 sf 0.00% Impervious Runoff Depth= 0.00" Flow Length = 1,421' Tc =34.2 min CN =58 Runoff =0.00 cfs 0.000 of Runoff Area= 271.794 sf 36.51% Impervious Runoff Depth = 0.00" Flow Length =892' Tc =14.5 min CN =73 Runoff =0.00 cfs 0.000 of Runoff Area = 104.685 sf 55.32% Impervious Runoff Depth = 0.00" Flow Length =250' Tc =10.1 min CN =81 Runoff =0.00 cfs 0.000 of Runoff Area = 266.734 sf 56.79% Impervious Runoff Depth =0.00" Flow Length =250' Tc =10.8 min CN =82 Runoff=0.00 cfs 0.001 af Runoff Area= 501.430 sf 49.95% Impervious Runoff Depth= 0.00" Flow Length=755' Tc =18.6 min CN =79 Runoff =0.00 cfs 0.000 of Runoff Area = 87.012 sf 90.00% Impervious Runoff Depth = 0.14" Flow Length =370' Tc =12.6 min CN=94 Runoff =0.36 cfs 0.023 af Runoff Area= 85.313 sf 7.73% Impervious Runoff Depth = 0.00" Flow Length =774' Tc =19.9 min CN =70 Runoff =0.00 cfs 0.000 of Runoff Area = 316.304 sf 0.00% Impervious Runoff Depth = 0.00" Flow Length =401 Scope = 0.0350'1` Tc =16.1 min CN =64 Runoff =0.00 cfs 0.000 of Peak EIev= 938.00' Storage =0.000 af Inflow=0.00 cfs 0.000 af 18.0" x 80.0' Culvert Outflow =0.00 cfs 0.000 of Peak EIev= 935.50' Storage =3 cf Inflow =0.00 cfs 0.000 af 15.0" x 879.0' Culvert Outflow =0.00 cfs 0.000 af Peak EIev = 938.00' Storage =0 cf Inflow=0.00 cfs 0.000 af Primary =0.00 cfs 0.000 af Secondary =0.00 cfs 0.000 af Outflow =0.00 cfs 0.000 af Peak EIev = 937.70' Storage =0 of Inflow =0.00 cfs 0.000 af Outflow =0.00 cfs 0.000 af Peak EIev= 937.00' Storage = 16.215 cf Inflow =0.00 cfs 0.001 af Outflow =0.00 cfs 0.000 af Peak EIev= 947.00' Storage =0.000 af Inflow =0.00 cfs 0.000 af 12.0" x 950.0' Culvert Outflow =0.00 cfs 0.000 af Peak EIev = 920.03' Inflow =0.00 cfs 0.000 af 15.0" x 171.0' Culvert Outflow =0.00 cfs 0.000 of Peak EIev= 927.02' Storage = 111.750 cf Inflow -0.49 cfs 0.024 af Discarded =0.00 cfs 0.006 of Primary =0.00 cfs 0.000 of Secondary =0.00 cfs 0.000 of Outflow =0.00 cfs 0.006 of Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Type 1124 -hr 0.5 Inch Rainfall =4.54" Printed 11/11/2008 Pa • e 5 Pond Pond B7A: Peak Elev =934.47 Storage =994 cf Inflow=0.36 cfs 0.023 af Outflow -0.00 cfs 0.000 af Total Runoff Area = 62.886 ac Runoff Volume = 0.048 af Average Runoff Depth = 0.01" 70.60% Pervious = 44.396 ac 29.40% Impervious = 18.491 ac Carriage House Total Hydrocad inf Type 1124 -hr 0.5 Inch Rainfall =O.54" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 HydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC page 6 Runoff e 0.49 cfs @ 11.99 hrs, Volume= Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type II 24 -hr 0.5 Inch Rainfall= 0.50" 6.8 0.5 0.45. 0.4 0.35 0.3 2 0.25 0.2 0.1 0.05 Area CsILS Description 11,211 61 >75% Grass cover, Good, HSG B 81 218 98 Paved • arkin • & roofs 92,429 11,211 81,218 250 Total 94 Weighted Average Pervious Area Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) {cfs} 6.1 50 0.0200 0.14 Summary for Subcatchment GW1: 0.49 cfs Sheet Flow, Grass: Short n= 0.150 P2= 2.75" 0.7 200 0.0600 4.97 Shallow Concentrated Flow, Paved Kv= 20.3 fi s 0.024 af, Depth= 0.14" Subcatchment GW1 Hydrograph 10 F riiiiiiiii.�� iii Type II ?4 -hr 0.5 Inch RainfaIIO 50U Runoff Area92,429 sf Runoff Volume=O 024 of Runoff DepthO 14 °' Flow Length=25O' Tc6 8 min =94 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 D 2007 H droCAD Software Solutions LLC [451 Hint: Runoff=Zero Runoff = 0.00 cfs @ 0.00 hrs, Volume= Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 1I24-hr 0.5 Inch Rainfall- 0.50" Area sf CN Descri tion 24,044 61 >75% Grass cover, Good, HSG B 13 418 98 Paved . arkin. & roofs 37,462 24,044 13,418 Tc Length Slope Velocity Capacity Description min feet f�lft ftlsec cfs 8.8 50 0.0200 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 1.8 230 0.0200 2.12 Shallow Concentrated Flow, Grassed Waterwa Kv= 15.0 f 10.6 0 280 Total 74 Weighted Ave ra g e Pervious Area Impervious Area Summary for Subcatchment GW2: Subcatchment GW2: Hydrograph 0.000 af, Depth- 0.00" Type 11,24 - hr 0.5 Inch Rainfall= 0.50" Printed 11/11/2008 Pa •e 7 Type II24hrO.5 Inch RainfaIIQ 50" Runoff Area37,462 sf Runoff VoIumeO 000 af Runoff Depth0 00" FIo Length2SO' Sope=0 0200 Tc=10 6 min CN74 0.00 cfs 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC [45] Hint: Runoff =Zero Runoff 0.00 cfs a@ 0.00 hrs, Volume= Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 1124 -hr 0.5 Inch Rainfall =0.50" 2 0 9.5 120,067 207 0.0200 Pervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 0.36 Summary for Subcatchment P1: L.agJCN Method, Subcatchment P1: Hydrograph 0.000 af, Depth= 0.00" Type 11 24 0.5 Inch Rainfall =O.50" Printed 11/11/2008 Pa • e 8 Area sf CN Descri tion ` 120,067 66 Type ll 24 -hr 0..5 Inch RainfaIIO 51 Runoff Areal2O,067 sf Runoff VoIumeO 000 af Runoff DpthOQO' Flow Length2O7' SIopeO 0200 Tc9 5 min CN =66 0 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Runoff Carriage House Total Hydrocad inf Type 11 24-hr 0.5 Inch Rainfall =0.50" Prepared by Folz, Freeman, Erickson, Inc. Printed 11111/2008 HydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC P age 9 Summary for Subcatchment P10: [45] Hint: Runoff =Zero Runoff 0.00 cfs a@ 0.00 hrs, Volume= Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 1124-hr 0.5 Inch Rainfall=0.50" Area sf CN Descri• tion 243,573 58 Meadow, non - grazed, HSG B 53,145 98 Paved parking & roofs 13 648 100 Pond 310,366 243,573 66,793 67 Weighted Average Pervious Area Impervious Area Tc Length Slope Velocity Capacity Description min feet ftlft ftJsec cfs 21.6 690 0.0250 0.53 Lag/CN Method, 0 Subcatchment P10: Hydrograph 0.000 af, Depth= 0.00" Type 1124-hr 0.5 Inch Rainfall=O 5Ov Runoff Area=310,366 sf Runoff Vo1umeO 000 af Runoff Depth=O OO ' Flow Length =690' SlopeO 0250 '/' Tc=21 6 min CN =67 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad inf Type 1124 -hr 0.5 Inch Rainfall =0.50" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Page 1 D [45] Hint: Runoff =Zero Runoff = 0.00 cfs a[ 0.00 hrs, Volume= Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type I124-hr 0.5 Inch Rainfa[I= 0.50" Tc Length Slope Velocity Capacity Description min feet ftlft ftlsec cfs 7.5 50 0.0300 0.11 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 26.7 1,371 0.0150 0.86 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 34.2 1,421 Total 0 Area (sf} CN Description 545,736 58 Meadow, non- razed, HSG B 545,736 Pervious Area 0 Summary for Subcatchment P2: Subcatchment P2: Hydrograph 0.000 af, Depth= 0.00" Type II 24 -hr 0.5 Inch RainfaIIO 5Qfl Runoff Area545,736 sf Runoff Volume=O 000 af Runoff DepthO 00" Flow Lengthl,42V Tc34 2 min CN =58 0.00 cfs 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad inf Type 11 24-hr 0.5 Inch Rainfa11 =0.50" Prepared by Folz, Freeman, Erickson, Inc. Printed 1 1 /11 /2008 HydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC P ace 11 [45] Hint: Runoff =Zero Runoff = 0.00 cfs a[7 0.00 hrs, Volume= Runoff by SCS TR -20 method, DH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 1124 -hr 0.5 Inch Rainfall= 0.50" Area sf CN Descri tion 85,649 98 11,784 98 172,551 58 1,810 100 Paved parking & roofs Building Meadow, non - grazed, HSG B Pond 271,794 172,551 99,243 Summary for Subcatchment P3: Description 73 Weighted Average Pervious Area Impervious Area 9.3 100 0.0700 2.4 144 0.0200 2.1 365 0.0200 0.7 283 0.0200 14.5 892 Total 0.000 at Depth= 0.00" Tc Length Slope Velocity Capacity min feet ft/ft ft/sec cfs 0.18 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 0.99 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps 6.95 5.46 Circular Channel (pipe), Diam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25' n= 0.012 u) 0 Subcatchment P3: Hydrograph Type 1124-hr 0.5 Inch Rainfall=O 5O`' Runoff Area=271 ,794 sf Runoff Voume=O 000 af Runoff DepthO 00" Flow Length -892' Tc=14 5 min CN =73 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Runoff = 0.00 cfs @ 24.01 hrs, Volume= Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type II 24-hr 0.5 Inch Rainfall = 0.50" 46,778 58 Woods /grass comb., Good, HSG B 14,532 98 Building 2,500 98 Paved parking & roofs 40 875 99 Pond Tc Length min feet 10.1 250 Total u 0 6.7 104,685 81 Weighted Average 46,778 Pervious Area 57,907 Impervious Area 3.4 200 0.0200 0.99 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 0 0 0 50 0.0400 Type 0 24hrO5 Inch RainfallO 50" Runoff Are=1 04,685 sf Runoff VoumeO 000 af unoff Depth=0 00 Flow Length250' Tc10 1 min N =81 Slope Velocity Capacity Description ft/ft ft/sec cfs 0.12 Summary for Subcatchment P4: Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f . s Hydrograph 0.000 af, Depth= 0.00" Subcatchment P4: Type 1124 -hr 0.5 Inch Rainfall =p. 50" Printed 11/11/2008 Page 12 0.00 cfs 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad i of Prepared by Folz, Freeman, Erickson, Inc. HydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC Runoff = 0.00 cfs © 24.01 hrs, Volume= Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type 11 24 -hr 0.5 Inch Rainfall =0.50" 0 Area �sf� CN Description 32,966 58 Woods /grass comb., Good, HSG B 141,646 98 Paved parking & roofs 9,837 99 Water 82,285 61 >75% Grass cover Good HSG B 266,734 115,251 151,483 Tc Length Slope Velocity Capacity Description min feet ftlft ft/sec cfs 8.8 50 0.0200 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 2.0 200 0.0550 1.64 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f•s 10.8 250 Total 0.002 0.002 0.002 0.002 0.002 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.000 0.000 0.000 0 -: 0 0 0 T ype I1244ir O51nc RainfaII=O 50" unoff Area266,734 sf RunoffVolume=0 001 af Runoff Depth0 00" F low L 82 Weighted Average Pervious Area Impervious Area 8 min Summary for Subcatchment P5: Hydrograph 0.001 af, Depth= 0.00" Subcatchment P5: 0.00 cfs Type 11 24 0.5 Inch Rainfall =O.50" Printed 11/11/2008 Page 13 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad i of Type 11 24-hr 0.5 Inch Rainfall =0.50" Prepared by FoIz, Freeman, Erickson, Inc. Printed 11/11/2008 H droCAD® 8.50 sin 002112 ©2007 H droCAD Software Solutions LLC Page 'I 4 [45] Hint: Runoff=Zero Runoff = 0.00 cfs a[7 0.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type 11 24 -hr 0.5 Inch Rainfall= 0.50" 6.7 Area sf CN Descri . tion 21 1,691 98 177,722 61 38,796 100 73,221 60 501 ,430 250,943 250,487 Tc Length min feet 79 50 0.0400 Slope Velocity Capacity ft/ft ft/sec cfs 0.12 11.9 705 0.0200 0.99 18.6 755 Total Paved roads w /curbs & sewers >75% Grass cover, Good, HSG B Pond Meadow, non- • razed, HSG B Weighted Average Pervious Area Impervious Area Summary for Subcatchment P6: Description Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f Subcatchment P6: Hydrograph Type II 24 -hr 0.5 Inch RainfaIIO 50U Runoff Area5Ol ,430 sf Runoff Volume=O 000 af Runoff Depth=O 00" Fkw Length755' Tc18 6 min °NrIzedrzzoomwz/zeefzirevidrorzdepzzorzy 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC Summary for Subcatchment P7: Runoff = 0.36 cfs 12.06 hrs, Volume= 0.023 af, Depth= 0.14" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 11 24 -hr 0.5 Inch Rainfall =0.50" Area sf CN Descri tion 78,311 98 Paved parking & roofs 8,701 61 >75% Grass cover, Good, HSG B 87,012 94 Weighted Average 8,701 Pervious Area 78,311 Impervious Area Tc Length min feet 8.8 3.8 50 0.0200 320 0.0400 370 Total 12.6 Slope Velocity Capacity Description ft/ft ft/sec cfs 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 1.40 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 0.4 0.38 0.36 0.36 0.32 I 0.3 0.28 / 0.26 0.24 v 022 0.2 i f 0.18 � 0.16 ' _ _ 10 0.14 0 OF .12 0.1 si0;;c 0.08 og 0.04 _ % � ' ` 0.02 � �, /�1�.������.�/1,�������1����I�J��/ 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0.36 cfs Subcatchment P7: Hydrograph Type 11 24 - hr 0.5 Inch Rainfall =0.50" Printed 11/11/2008 Page 15 Type 11 24 -hr 0.5 Inch RainfaHO 50 Runoff Area87,012 s Runoff Volume=0 023 af Runoff Depth - 0.14 Flow Length370' Tc126 min =94 0 Runoff Carriage House Total Hydrocad inf Type II 24-hr 0.5 Inch Rainfall =0.50" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 H droCADD 8.5❑ sln 002112 © 2007 H droCAD Software Solutions LLC Page 16 [45] Hint: Runoff=Zero Runoff = 0.00 cfs @ 0.00 hrs, Volume= Runoff by SCS TR -20 method, UH -SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 11 24 -hr 0.5 Inch Rainfall= 0.50" Area sf CN Description 20,196 85 Gravel roads, HSG S 58,520 61 >75% Grass cover, Good, HSG B 6 597 100 Pond 85,313 78,716 6,597 70 Weighted Average Pervious Area Impervious Area Tc Length Slope Velocity Capacity min feet ft /ft ft/sec cfs 10.0 100 0.0590 0.17 1.7 173 0.0590 1.70 6.7 251 0.0080 0.63 1.5 250 0.0360 ................ 19.9 774 Total 0 0 2.85 Summary for Subcatchment P7A: Description 0.000 af, Depth= 0.00" Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps Shallow Concentrated Flow, Grassed Waterwa Kv= 15.0 f • s Subcatchment P7A: Hydrograph Type fi 24 -hr 0.5 Inch RarnfaUO 50" Runoff Area =85,313 sf Runoff VoIumeO 000 of Runoff Depth0 00 Flow Length774 Tc =19.9 min 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Type 1124 -hr 0.5 Inch Rainfall =4.50" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/1112008 LlydroCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Pa e 17 [45] Hint: Runoff =Zero Runoff = 0.00 cfs 0.00 hrs, Volume= Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 11 24 -hr 0.5 Inch Rainfall =0.50" Tc Length min feet 12.3 LL Area sf CN Description 316,304 316,304 64 100 0.0350 Pervious Area 3.8 301 0.0350 1.31 16.1 401 Total Slope Velocity Capacity Description ft/ft ft/sec cfs 0.14 Summary for Subcatchment P9: 0.000 af, Depth= 0.00" Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f Hydrograph Subcatchment P9: Type 1124 -hr 0.5 Inch RainfaIIO 50" Runoff Area =316,304 sf Runoff V�Iume0000 af Runoff Depth0 00" Flow Length =401' SIopeO 0350 '1' Tc=16 1 min CN=64 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Inflow Area = 15.285 ac, 0.00% Impervious, Inflow Depth = 0.00" for 0.5 Inch event Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs f 0.00 hrs, Volume= 0.000 af, Atten= 0 %, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 938.00' a@ 0.00 hrs Surf.Area= 0.590 ac Storage= 0.000 af Plug -Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no inflow) Volume Invert Avail.Stora• e Stara • e Descri• tion #1 938.00' 6.623 af Custom Stage Data (Irregular) Listed below Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area feet acres feet acre -feet acre -feet acres 938.00 0.590 600.0 0.000 0.000 0.590 940.00 0.700 652.0 1.288 1.288 0.712 942.00 0.820 703.0 1.518 2.807 0.842 944.00 0.950 759.0 1.768 4.575 0.996 946.00 1.100 816.0 2.048 6.623 1.164 Device Routin #1 Primary Invert Outlet Devices Summary for Pond BI 942.00' 18.0" x 80.0' long Culvert CMP, end - section conforming to fill, Ke= 0.500 Outlet Invert= 941.00' S= 0.0125 7' Cc= 0.900 n= 0.012 Primary OutFlow Max =0.00 cfs @ 0.00 hrs HW= 938.00' (Free Discharge) "I =Culvert ( Controls 0.00 cfs) X00 0.00 cfs 0 4 Hydrograph Pond BI: nflow Area15.285 ac Peak E1ev938 00' Storage0 000 af 0" x 80 0' Culvert 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Type 11 24-hr 0.5 Inch Rainfall =O.50" Printed 11/11/2008 Pa 18 Li Inflow 0 Primary Carriage House Total Hydrocad inf Type 11 24-hr 0.5 Inch Rainfall =O.50" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 HydroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Page 19 Inflow Area = 29.153 ac, 29.56% Impervious, Inflow Depth = 0.00" for 0.5 Inch event Inflow - 0.00 cfs @ 24.01 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 24.58 hrs, Volume= 0.000 af, Atten = 100 %, Lag= 33.7 min Primary = 0.00 cfs @ 24.58 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 935.50` @ 24.58 hrs Surf.Area= 44,056 sf Storage= 3 cf Plug -Flow detention time= 442.7 min calculated for 0.000 af (0% of inflow) Center -of -Mass det. time= 248.4 min ( 1,591.5 - 1,343.1 ) Volume Invert Avail.Stora• e Stara • e Descri•tion #1 935.50' Elevation feet 935.50 936.00 938.00 940.00 Device Routine #1 Primary 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 g 0.000 0.009 0.000 0.000 0.000 0 : 0 0 254,384 cf Custom Stage Data (Irregular) Listed below S u rf.Area Perim. s• -ft feet 44,056 847.0 45,780 844.0 59,126 955.0 68,288 1,064.0 Primary OutFlow Max =0.00 cfs @ 24.58 hrs HW= 935.50' TW= 927.42' (Dynamic Tailwater) Culvert (Barrel Controls 0.00 cfs @ 0.01 fps) VA MEW Ard "Loo.01W .f 0.00 cfs r e7 WireZeiO 3 4 5 Invert Outlet Devices 935.50' 15.0" x 879.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 928.00' S= 0.0085 'l' Cc= 0.900 n= 0.012 Inflow Area29153 ac Peak EIev=935 50' torage3 cf 79.0' C ulvert Summary for Pond B2: lnc.Store Cum.Store cubic -feet cubic -feet 0 0 22,458 22,458 104,622 127,079 127,304 254,384 Hydrograph Pond B2: Wet.Area s r -ft 44,056 44,641 60,633 78,261 0.00 cfs 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Inflow El Primary Carriage House Total Hydrocad inf Prepared by FoIz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Inflow Area = 7.125 ac, 21.52 °A Impervious, Inflow Depth = 0.00" for 0.5 Inch event Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs © 0.00 hrs, Volume= 0.000 af, Atten= 0 %, Lag= 0.0 min Primary = 0.00 cfs © 0.00 hrs, Volume= 0.000 of Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 938.00' @ 0.00 hrs Surf.Area= 500 sf Storage= 0 cf Plug -Flow detention time= (not calculated: initial storage excedes outflow) Center -of -Mass det. time (not calculated: no inflow) Volume Invert Avail.Stora. a Stara • e Descri.tion #1 Elevation feet 938.00 940.00 942.00 944.00 Device Routine #1 Primary 938.00' 96,696 cf Custom Stage Data (Irregular) Listed below Surf.Area Perim. s• -ft feet 500 100.0 897 135.0 23,920 1,226.0 53,751 1,434.0 Invert Outlet Devices 12.0" x 120.0' long Culvert RCP, end - section conforming to fill, Ke= 0.500 Outlet Invert= 938.24' S= 0.0015 '1' Cc= 0.900 n= 0.012 #2 Secondary 943.70' 100.0' long x 20.0' breadth Broad - Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 938.42' Summary for Pond B3: Inc.Store Cum.Store cubic -feet cubic -feet 0 0 1,378 1,378 19,633 21,011 75,685 96,696 Wet.Area s . -ft 500 1,195 119,364 163,473 Primary OutFlow Max =0.00 cfs @ 0.00 hrs HW =938.00' TW =937.70' (Dynamic Tailwater) 1=Culvert ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs © 0.00 hrs HW =938.00' TW =935.50' (Dynamic Tailwater) Z--w- 2=Broad- Crested Rectangular Weir ( Controls 0.00 cfs) Type 1124 - hr 0.5 Inch Rainfalfr0.50" Printed 1111112008 Pa.e 20 Carriage House Total Hydrocad inf Prepared by Falz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC � Ocfs r0.00 cfs Hydrograph Pond B3: Inflow Area7125 ac Peak EIev=938 OO` StorageO cf 1 11 wtr:"1"4"FdirOP.,0,~7.11( 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Type 11 24-hr 0.5 Inch Rainfall =O.50" Printed 11/11/2008 Pa•e21 Inflow L Outflow 0 Primary 0 Secondary Carriage House Total Hydrocad inf Prepared by FoIz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Inflow Area = 13.365 ac, 28.52% Impervious, Inflow Depth = 0.00" for 0.5 Inch event Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 0 %, Lag= 0.0 min Primary _ 0.00 cfs © 0.00 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 937.70' © 0.00 hrs Surf.Area= 1,878 sf Storage= 0 cf Plug -Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no inflow) Volume Invert Avail.Storage Storage Description 0 Summary for Pond B4: #1 937.70' 11,008 cf Custom Stage Data (Irregular) Listed below Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area feet s • -ft feet cubic -feet cubic -feet s • -ft 937.70 1,878 182.0 0 0 1,878 938.00 3,572 243.0 804 804 3,942 940.00 6,804 403.0 10,204 11,008 12,192 _Device_ Routing Invert Outlet Devices #1 Primary 937.90' 10.0' long x 10.0' breadth Broad - Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Maxm0.00 cfs @ 0.00 hrs HW= 937.70' TW = 935.50' (Dynamic Tailwater) 1 =Broad$Crested Rectangular Weir ( Controls 0.00 cfs) 11 s ::: 0.00 0 cfs 4 6 Hydrograph Pond B4: Type 1124 -hr 0.5 Inch Rainfall =O.50" Printed 11/11/2008 Pa ■ e 22 nflow Area=13.365 ac Peak E1ev937 7O' StorageO cf 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) n Inflow 0 Primary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Inflow Area = Inflow = Outflow = Primary 13.385 ac, 25.98% Impervious, Inflow Depth = 0.00" for 0.5 Inch event 0.00 cfs © 24.01 hrs, Volume= 0.001 af 0.00 cfs © 0.00 hrs, Volume= 0.000 af, Atten= 100 %, Lag= 0.0 min 0.00 cfs © 0.00 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span = 0.00 -30.00 hrs, dt= 0.01 hrs Starting EIev= 937.00' Surf.Area = 16,501 sf Storage= 16,179 cf Peak EIev= 937.00' a@7 24.61 hrs Surf.Area= 16,514 sf Storage= 16,215 cf (37 cf above start) Plug -Flow detention time= (not calculated: initial storage excedes outflow) Center -of -Mass det. time= (not calculated: no outflow) Volume #1 Elevation feet 936.00 938.00 940.00 Invert Avail.Stora. e Stara • e Descri .tion 0.002 0,002 0.002 0.002 0.002 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001-.' 0.001 0.000. 0.000 0,000: 0.000 0.00 0 936.00' Su rf. Area s• -ft 10,936 22,066 33,801 Device Routin . Invert #1 Primary 937.80' inflow Peak 4 87,809 cf Custom Stage Data (Irregular) Listed below Perim. feet 483.0 624.0 779.0 Summary for Pond B5: Inc.Store cubic -feet 0 32,358 55,452 Outlet Devices 10.0' long x 10.0' breadth Broad - Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max =0.00 cfs © 0.00 hrs HW= 937.00' TW =935.50' (Dynamic Tailwater) 1 =Broad - Crested Rectangular Weir ( Controls 0.00 cfs) rea =13.385 ac EIev=937 OO Stog�=16,2i5 cf Hydrograph Pond B5: Cum.Store cubic -feet 0 32,358 87,809 W et.A rea s• -ft 10,936 23,406 40,768 0.00 cfs 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Type 11 24-hr 0.5 Inch Rainfall O.50" Printed 11/11/2008 Pa • e 23 cfs WA O ffrAMOMM sue.., /,//.)7/./ .. ./ /., /,.../. ..,/..f // "..,/././....... 0 Inflow 0 Primary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Inflow Area = 7.261 ac, 0.00% Impervious, Inflow Depth = 0.00" for 0.5 Inch event Inflow = 0.00 cfs © 0.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs © 0.00 hrs, Volume= 0.000 af, Atten= 0 %, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak EIev = 947.00' at 0.00 hrs Surf.Area= 0.144 ac Storage= 0.000 af Plug -Flow detention time= (not calculated: initial storage excedes outflow) Center -of -Mass det. time= (not calculated: no inflow) Volume Invert Avail.Stora• e Stara s e Descri . tion #1 947.00' 0 0 Elevation Surf.Area Perim. Inc.Store Cum.Store Wet,Area (feet) (acres) (feet) (acre -feet) (acre -feet) Jacres) 947.00 0.144 289.0 0.000 0.000 0.144 948.00 0.600 598.0 0.346 0.346 0.645 950.00 1.035 819.0 1.615 1.961 1.218 Device Routing #1 Primary 1.961 af Custom Stage Data (Irregular) Listed below Invert Outlet Devices Summary for Pond CITY POND: 949.00' 12.0" x 950.0' long Culvert CMP, end - section conforming to fill, Ke= 0.500 Outlet Invert= 939.00' S= 0.0105 '1' Cc= 0.900 n= 0.012 Hydrograph Primary OutFlow Max =0.00 cfs cj 0.00 hrs IOW =947.00' TW =937.00' (Dynamic Tailwater) 1 =Culvert ( Controls 0.00 cfs) Pond CITY POND: Type 1124 -hr 0.5 Inch Rainfall =O.50" Printed 11/11/2008 Pa • e 24 0 4 Inflow Area7261 ac Peak E1ev947 OO' Storage -0.00A af 0' x 950.0' Culvert Met N 000 cfs . A 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) LI Inflow 9 Primary Carriage House Total Hydrocad inf Prepared by FoIz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC [57] Hint: Peaked at 920.03' (Flood elevation advised) Inflow Area = 47.602 ac, 38.84% Impervious, Inflow Depth = 0.00" for 0.5 Inch event Inflow 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= O %, Lag = 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Peak Elev= 920.03' © 0.00 hrs Device Routin Invert Outlet Devices #1 Primary 920.03' 15.0" x 171.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 918.00' S= 0.0119 'l' Cc= 0.900 n= 0.012 Concrete pipe, finished Primary OutFlow Max =0.00 cfs © 0.00 hrs HW= 920.03' (Free Discharge) 1 =Cul►rert ( Controls 0.00 cfs) 0 0.00 cfs 0 Summary for Pond EX. CB: Pond EX. CB: Hydrograph Inflow Area =47.602 ac Peak EIev92O 03V 15M °'x171.0' Culvert Type 11 24-hr 0.5 Inch Rainfall =0.54" Printed 11/11/2008 Page 25 'mod frirzzi ez/zitro mor gerwA gori ozzoromezego r 0P- 4, mom wo rosedreor fe do wood r domfoio „of 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad inf Prepared by FoIz, Freeman, Erickson, Inc. HydroCAD® 8.50 sln 002112 © 2007 HydroCAD Software Solutions LLC Inflow Area = 46.742 ac, 38.90% Impervious, Inflow Depth = 0.01" for 0.5 Inch event Inflow = 0.49 cfs @ 11.99 hrs, Volume= 0.024 of Outflow = 0.00 cfs @ 24.08 hrs, Volume= 0.006 af, Atten= 99 %, Lag= 725.4 min Discarded = 0.00 cfs @ 24.08 hrs, Volume= 0.006 af Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Starting Elev= 927.00' Surf.Area= 29,423 sf Storage= 110,877 cf Peak Elev= 927.02' f 24.08 hrs Surf.Area= 29,761 sf Storage= 111,750 cf (873 cf above start) Plug -Flow detention time= (not calculated: initial storage excedes outflow) Center -of -Mass det. time= 419.0 min ( 1,288.7 - 869.8 ) Volume Invert Avail.Storas e Stora. e Descri.tion #1 920.00' Summary for Pond Pond 1: 487,005 cf Custom Stage Data (Irregular) Listed below Elevation Surf.Area Perim. Inc.Store Cum.Store feet s -ft feet cubic -feet cubic -feet 920.00 927.00 928.00 930.00 932.00 934.00 5,442 735.0 0 0 29,423 1,369.0 110,877 110,877 43,440 1,434.0 36,205 147,082 52,160 1,472.0 95,467 242,549 61,112 1,511.0 113,154 355,703 70,297 1,632.0 131,302 487,005 Device Routin . Invert Outlet Devices #1 Primary 928.00' 8.0" x 293.0' long Culvert RCP, mitered to conform to fill, Ke= 0.700 Outlet Invert= 920.03' S= 0.0272 '1' Cc= 0.900 n= 0.012 #2 Device 1 925.00' 2.50' W x 2.00' H Vert. Orifice /Grate C= 0.600 #3 Device 1 932.80' 48.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600 #4 Secondary 934.00' 15.0' long x 10.0' breadth Broad- Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 #5 Discarded 927.00' 0.600 in/hr Exfiltration over Wetted area above invert Excluded Wetted area = 111,848 sf Discarded OutFlow Max =0.00 cfs a@ 24.08 hrs HW= 927.02' (Free Discharge) '-- n-- 5 =Exfiitration (Exfiltration Controls 0.00 cfs) Secondary OutFlow Max =0.00 cfs @ 0.00 hrs HW= 927.00' (Free Discharge) Broad- Crested Rectangular Weir ( Controls 0.00 cfs) Wet.Area (sq -ft) 5,442 111,848 126,415 135,670 145,397 175,823 Primary OutFlow Max =0.00 cfs © 0.00 hrs HW= 927.00' TW= 920.03' (Dynamic Tailwater) 1- Culvert ( Controls 0.00 cfs) L 2Orifice/Grate ( Controls 0.00 cfs) 3 =Orifice /Grate ( Controls 0.00 cfs) Type 11 24 0.5 Inch Rainfall =4.50" Printed 11/11/2008 Page 26 Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC 0.5' 0.35 3 0.3 a 0,25 Hydrograph Pond Pond 1: Inflow Area =46.742 ac Peak EIev =927.02' Storage =111 cf 0.1 � V....r...N.. ., 0.00 cfs . ; : 0.00 cf 0 i./ffMfreeeo:e.—o 07, F r 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Type 11 24-hr 0.5 Inch Rainfall =4.50" Printed 11/11/2008 Page 27, 0 Inflow `. .1 Outflow Discarded Primary 0 Secondary Carriage House Total Hydrocad inf Type 11 24-hr 0.5 Inch Rainfall =0.50" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 jydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC Page 28 Inflow Area = 3.956 ac, 49.27% Impervious, Inflow Depth = 0.07" for 0.5 Inch event Inflow = 0.36 cfs @ 12.06 hrs, Volume= 0.023 af Outflow = 0.00 cfs a@ 0.00 hrs, Volume= 0.000 af, Atten= 100 %, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span= 0.00- w30.00 hrs, dt= 0.01 hrs Peak Elev= 934.47' @ 24.73 hrs Surf.Area= 2,575 sf Storage= 994 cf Plug -Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Stora• e Stora• e Descri tion #1 934.00' Elevation feet 934.00 936.00 938.00 Surf.Area 1,721 6,597 15,701 Summary for Pond Pond B7A: 29,442 cf Custom Stage Data (Irregular) Listed below (Recalc) Perim. s • -ft feet 161.0 421.0 815.0 Inc.Store Cum.Store cubic -feet cubic -feet 0 0 7,792 7,792 21,650 29,442 Wet.Area s + -ft 1,721 13,777 52,549 Device Routines_______ Invert Outlet Devices #1 Primary 930.16' 21.0" x 322.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 928.00' S= 0.0067 '1' Cc= 0.900 n= 0.013 #2 Device 1 936.00' 48.0" Horiz. Orifice /Grate Limited to weir flow C= 0.600 Primary OutFlow Max =0.00 cfs © 0.00 hrs HW= 934.00' TW =927.00' (Dynamic Tailwater) 1 Culvert (Passes 0.00 cfs of 15.86 cfs potential flow) t ---2 =Orifice /Grate ( Controls 0.00 cfs) 0.4 0.38 0.36' 0.34 . 0.32 0.3'. 0.28 0.26 0.24 0.22 0.2 0.18-='" 0.16 0.14 0.12-. 0.1: 0.08 0.06 - 0.04 0.00 cfs 0 Pond Pond B7A: Hydrograph vAm profedmzemo rdw ardlillillille" 1 "dre4 bref Arefeede 0.36 cfs nflow Area =3. ac Peak E1ev9 4T orage =994 cf 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) E::::I Inflow 0 Primary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc, HydroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Subcatchment GW1: Subcatchment GW2: Subcatchment P1: Subcatchment P10: Subcatchment P2: Subcatchment P3: Subcatchment P4: Subcatchment P5: Subcatchment P6: Subcatchment P7: Subcatchment P7A; Subcatchment P9: Pond BI: Pond 82: Pond B3: Pond B4: Pond 85: Pond CITY POND: Pond EX. CB: Pond Pond 1: Time span=0.04 -30.00 hrs, dt =0.01 hrs, 3001 points Runoff by SCS TR-20 method, UH =SCS Reach routing by Sim -Route method - Pond routing by Sim -Route method Type 11 24 2 Rainfall =2.75" Printed 11/1112008 Page 29 Runoff Area = 92.429 sf 87.87% impervious Runoff Depth =2.11 " Flow Length =250' Tc= 6.8 min CN =94 Runoff= r.28 cfs 0.373 of Runoff Area = 37.462 sf 35.82% Impervious Runoff Depth =075" Flow Length =280' Slope= 0.0200 Tc =10.6 min CN =74 Runoff =0.93 cfs 0.054 af Runoff Area =120,067 sf 0.00% Impervious Runoff Depth =0.43" Flow Length =207' Slope= 0.0200'1' Tc =9.5 min CN =66 Runoff =1.49 cfs 0.099 of Runoff Area= 310.366 sf 21.52% Impervious Runoff Depth =0.47" Flow Length =690' Slope= 0.0250 '1' Tc =21.6 min CN =67 Runoff =2.62 cfs 0.276 of Runoff Area = 545.736 sf 0.00% Impervious Runoff Depth =0.20" Flow Length= 1,421' Tc =34.2 min CN =58 Runoff =0,71 cfs 0.207 of Runoff Area = 271.794 sf 36.51% Impervious Runoff Depth =0.71" Flow Length =892 Tc =14.5 min CN =73 Runoff= 5.34 cfs 0.368 of Runoff Area = 104.685 sf 55.32% Impervious Runoff Depth=1.12" Flow Length =250' Tc =10.1 min CN =81 Runoff =4.14 cfs 0.225 af Runoff Area =266,734 sf 56.79% Impervious Runoff Depth =1.19" Flow Length =250' Tc =10.8 min CN =82 Runoff =10.85 cfs 0.605 of Runoff Area =501,430 sf 49.95% impervious Runoff Depth =1.01 " Flow Length =755' Tc =18.6 min CN =79 Runoff =13.07 cfs 0.968 of Runoff Area =87,012 sf 90.00% Impervious Runoff Depth = 2.11" Flow Length =370' Tc =12.6 min CN =94 Runoff= 5.66 cfs 0.351 af Runoff Area =85,313 sf 7.73% Impervious Runoff Depth= 0,58" Flow Length =774' Tc =19.9 min CN =70 Runoff =1.06 cfs 0.095 of Runoff Area =316,304 sf 0.00% Impervious Runoff Depth = 0.36" Flow Length =401' Slope =0.0350 '1' Tc =16.1 min CN =64 Runoff =2.18 cfs 0.220 of Peak EIev =938.47' Storage =0.306 af Inflow=1.53 cfs 0.306 af 18.0" x 80.0' Culvert Outflow =0.00 cfs 0.000 of Peak EIev =935.98' Storage=21,699 cf Inflow=7.24 cfs 1.157 af 15.0" x 879.0' Culvert Outflow =1.04 cfs 0.948 of Peak EIev= 939.73' Storage =1,189 cf Inflow =2.62 cfs 0.276 af Primary =2.14 cfs 0.269 af Secondary =0.00 cfs 0.000 af Outflow =2.14 cfs 0.269 af Peak EIev =938.26' Storage =2,121 cf Inflow =5.88 cfs 0.638 af Outflow =5.45 cfs 0.625 af Peak Elev =937.90 Storage = 30.720 cf Inflow =10.85 cfs 0,605 af Outflow =0.77 cfs 0.307 af Peak EIev =947.64' Storage =0.220 af Inflow =2.18 cfs 0.220 af 12.0" x 950.0' Culvert Outflow =0.00 cfs 0.000 of Peak Elev =920.49' Inflow =0.93 cfs 0.976 af 15.0" x 171.0' Culvert Outflow =0.93 cfs 0.976 of Peak EIev= 928.66' Storage = 178.606 cf Inflow =16.12 cfs 2.556 af Discarded =0.24 cfs 0.350 af Primary =0.85 cfs 0.922 af Secondary= 0.00 cfs 0.000 af Outflow =1.10 cfs 1.271 af Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Type 1124 -hr 2m Year Rainfal1-2. Printed 11/11/2008 Pa e 30 Pond Pond B7A: Peak Elev= 936.16' Storage =8,921 cf Inflow=6.39 cfs 0.446 af Outflow= 2.73 cfs 0.267 af Total Runoff Area = 62.886 ac Runoff Volume = 3.842 af Average Runoff Depth = 0.73" 70.60% Pervious = 44.396 ac 29.40% Impervious =18.491 ac Carriage House Total Hydrocad inf Prepared by FoIz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Runoff Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt- 0.01 hrs Type 1124-hr 2 -Year Rainfall= 2.75" Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.1 50 0.0200 0.14 Sheet Flow, Grass: Short n= 0.150 P2= 2.75" 0.7 200 0.0600 4.97 Shallow Concentrated Flow, Paved Kv= 20.3 f• s �- 7.28 cfs © 11.98 hrs, Volume= Area sf CN Descri•tion 11,211 61 >75% Grass cover, Good, HSG B 81,218 98 Paved • arkin ■ & roofs 92,429 94 11,211 81,218 6.8 250 Total Weighted Average Pervious Area Impervious Area Summary for Subcatchment GWI: I] i o 0 L . 0 f orem , mr:6,7504 „ Nei ozo 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 7.28 c 0.373 af, Depth = 2.11" Subcatchment GWI: 1 Hydrograph Time (hours) Type 11 24-hr 2 -Year Rainfall =2.75" Printed 11/11/2008 Pa•e31 Type 1J24.h r 2 -Year Rainfall=2 75" Runoff Area=92,429 sf Runoff Volume=O 373 of RunoffDepth=2 11' Flow Length25O' Tc=6 8 min CN Carriage House Total Hydrocad inf Type 11 24-hr 2 -Year Rainfall=2. 75" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 H droCAD� 8.50 sln 002 2007 H droCAD Software Solutions LLC Page 32 Runoff = 0.93 cfs a@ 12.03 hrs, Volume= Summary for Subcatchment GW2: Runoff by SCS TR -20 method, UH =SCS, Time Span- 0.00 -30.00 hrs, dt= 0.01 hrs Type 11 24 -hr 2 -Year Rainfall- 2.75" 0 Area (sf) CN Description 24,044 61 >75% Grass cover, Good, HSG S 13,418 98 Paved parking & roofs 37,462 74 Weighted Average 24,044 Pervious Area 13,418 Impervious Area Tc Length Slope Velocity Capacity Description min (feet) _(ftlft) (ft/sec) (cfs) 8.8 50 0.0200 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 1.8 230 0.0200 2.12 Shallow Concentrated Flow, Grassed Waterwa Kv= 15.0 f • s 10.6 280 Total j i iiteerf zemovzo-,,eriezziz Ammmaimmi-4 dx e Aforezoiwaredyy 0.93 cfs Subcatchment GW2: Hydrograph 0.054 af, Depth= 0.75" Type II 24 -hr 2 -Year RainfaII2 75" Runoff Area37,462 sf Runoff VoIumeO 054 of Runoff DepthO 75fl Flow Length28O' SIopeQ 0200 Tc10 6 min CN74 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad inf Type 11 24-hr 2 -Year Rainfall=2. 75" Prepared by Felt, Freeman, Erickson, Inc. Printed 11/11/2008 H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Page 33 Summary for Subcatchment P1: Runoff = 1.49 cfs @ 12.04 hrs, Volume= 0.099 af, Depth= 0.43" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 1124 -hr 2 -Year Rainfall=2.75" Area sf C N D escri do n 120 067 66 120,067 Pervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 9.5 207 0.0200 0.36 Lag/CN Method, Subcatchment P1: Hydrograph 1.49 cfs l 10 I PA 0 / • 0 I eflar~ ez.przzaffior AiiitatainasidOzzaferffez Type 11 24 -hr 2 -Year RainfaII2 75" Runoff Area=120,067 sf Runoff Vokime 0.099 af Runoff Depth=O 43" Flaw Length =207' Slope=O 0200 Tc9 5 min CN =66 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Type 1124 -hr 2 -Year Rainfa11r2. 75" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Page 34 Carriage House Total Hydrocad inf Runoff = 2.62 cfs © 12.19 hrs, Volume= Area (sf) CN Description 243,573 58 Meadow, non - grazed, HSG B 53,145 98 Paved parking & roofs 13 648 100 Pond 310,366 243,573 66,793 3 67 Weighted Average Pervious Area Impervious Area 4 Summary for Subcatchment P10: Tc Length Slope Velocity Capacity Description min feet ftlft ft/sec cfs 21.6 690 0.0250 0.53 LaglCN Method, 2.62 cfs Hydrograph 0.276 af, Depth= 0.47" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type I124-hr 2 -Year Rainfall=2.75" Subcatchment P10: Type 11 24 -hr 2 -Year RainfaII2 75" Runoff Area=310,366 sf Runoff VbIumeO.276 af Runoff DepthO 47" Flow Length69O' SIopeO 0250 W/ Tc21 6 min CN=67 I %j 0 Ott 00 /lt /..i.�</' . ��. i�iei, .iii�ii,� 1, iir l, �i eii�iiiiiiiii�i 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC Runoff Runoff by SCS TR-20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 1124 -hr 2-Year Rainfall =2.75" Tc Length min feet V 0 7.5 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25= 0. 2 0.15= 0.1 0.05 0 545,736 50 0.0300 Area sf CN Descri tion 545 736 58 Meadow non- • razed HSG 13 34.2 1,421 Total 0.71 cfs a@ 12.50 hrs, Volume= 0.207 at Depth= 0.20" Pervious Area 26.7 1,371 0.0150 0.86 Slope Velocity Capacity Description ft/ft ft/sec cfs 0.11 g/ firial* 0.71 cfs Summary for Subcatchment P2: Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f Subcatchment P2: Hydrograph Type 11 24 2 - Year Rainfall=2. 75" Printed 11/11/2008 Page 35 Type 11 24 -hr 2 -Year Rainfall=2 75" unoff Area=545,736 sf Runoff VoIumeO 207 af Runoff DepthO 20" Flow Length=1,421' Tc=34 2 min 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Prepared by Foil, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Runoff 85,649 11 ,784 172,551 1 810 Area sf CN Descri• tion 271,794 172,551 99,243 N 0 D 5 5.34 cfs a© 12.08 hrs, Volume= 98 Paved parking & roofs 98 Building 58 Meadow, non - grazed, HSG B 100 Pond 73 Weighted Average Pervious Area Impervious Area Slope Velocity Capacity Summary for Subcatchment P3: Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 1124 -hr 2 -Year Rainfall = 2.75" Description 0.368 af, Depth= 0.71" Tc Length min feet ft/ft ft/sec cfs 9.3 100 0.0700 0.18 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 2.4 144 0.0200 0.99 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 2.1 365 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps 0.7 283 0.0200 6.95 5.46 Circular Channel (pipe), Diam= 12.0" Area= 0.8 sf Perim= 3.1' 14.5 892 Total Subcatchment P ia Hydrograph Type 1124 - hr 2 - Year Rainfall= 2. 75" Printed 11/11/2008 Pa •e 36 =0.25' n =0.012 0 dmrarzezo 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runof Carriage House Total Hydrocad inf Prepared by FoIz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Summary for Subcatchment P4: Runoff = 4.14 cfs © 12.02 hrs, Volume= 0.225 af, Depth= 1.12" Runoff by SCS TR -20 method, UH -SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 11 24 -hr 2 -Year Rainfall= 2.75" Area sf CN D escri • do n 58 Woods /grass comb., Good, HSG B 98 Building 98 Paved parking & roofs 99 Pond 81 Weighted Average Pervious Area Impervious Area 46,778 * 14,532 2,500 * 40 875 104,685 46,778 57,907 10.1 250 Total 4.14 cfs Subcatchment P4: Hydrograph Tc Length Slope Velocity Capacity Description min feet ftlft ftlsec cfs 6.7 50 0.0400 0.12 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 3.4 200 0.0200 0.99 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f Type 11 24 2 - Year Rainfall =2.75" Printed 11/11/2008 Pa •e 37 00A i lo 0 i e zei fz, immeraz od 1 Type 1124 -hr 3 -Year Rainfall=2 75'' Runoff Area=104,685 sf Runoff Volume=O 225 of RunoffDepth=1 12" FI�w Length25O' Tc=1O1 min 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Type 11 24-hr 2 -Year Rainfall=2. 75" Prepared by Folz, Freeman, Erickson, Inc. Printed 1 1/1 1/2008 H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Page 38 Runoff = 10.85 cfs a@ 12.03 hrs, Volume Runoff by SCS TR -20 method, UH =SCS, Time Span- 0.00-30.00 hrs, dt= 0.01 hrs Type n 24 -hr 2 -Year Rainfall= 2.75" Area sf CN Descri. Lion 32,966 58 141,646 98 9,837 99 82 285 61 266,734 115,251 151,483 Tc Length (min) (feet) 8.8 50 2.0 200 10.8 12 10 8 7 6 5 4 3 2 1• o�- 0 Slope (eft) 0.0200 0.0550 250 Total Woods /grass comb., Good, HSG B Paved parking & roofs Water >75% Grass cover Good HSG B 82 Weighted Average Pervious Area Impervious Area Velocity (ft/sec) 0.09 1.64 Summary for Subcatchment P5: Capacity Description (cfs) Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f IrA 1,10/ 0 v ,�.s / /rl / / /� /e / /i�.� /.e / / %�/ • � /i r�� / /// /ice / /�v 10.85 cfs Subcatchment P5: Hydrograph 0.605 af, Depth= 1.19" e II 24 -hr 2 -Year RainfaII2 75 Runoff Area266,734 sf Runoff VoIumeO 605 of RunoffDepthl 19 FIow L Tc10 8 min =82 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) u Runoff Carriage House Total Hydrocad inf Type 11 24-hr 2 -Year Rainfall=2. 75" Prepared by Foiz, Freeman, Erickson, Inc. Printed 11/11/2008 HydroCAD� 8 sin 002112 © 2007 HydroCAD Software Solutions LLC __ Page 3g Summary for Subcatchment P6: Runoff = 13.07 cfs @ 12.12 hrs, Volume= 0.968 af, Depth= 1.01" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type II 24 -hr 2 -Year Rainfall =2.75" Tc Length min feet 6.7 11.9 18.6 14 13 12 11 10 9 7 . 5 ..- 4• 3 ...: Area sf 211,691 177,722 38,796 73,221 501,430 250,943 250,487 50 0.0400 705 0.0200 755 Total CN Description 98 61 100 60 79 Paved roads w/curbs & sewers >75% Grass cover, Good, HSG B Pond Meadow, non - grazed, HSG B Weighted Average Pervious Area Impervious Area Scope Velocity Capacity ft/ft ft/sec cfs 0.12 0.99 Description Hydrograph 13.07 cfs Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fp Subcatchment P6: Type 11 24 -hr 2 -Year Rainfall=2 75fl Runoff Area=501 ,430 sf Runoff Volume=O 96 RunoffDepthl 01" flow Length =755 min 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) ❑ Runoff Carriage House Total Hydrocad inf Prepared by FoIz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Runoff = 5.66 cfs © 12.04 hrs, Volume= Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type I124-hr 2 -Year Rainfall= 2.75" Area sf CN D esc ri . do n 78,311 98 8,701 61 87,012 94 8,701 78,311 Paved parking & roofs >75% Grass cover, Good, HSG B Weighted Average Pervious Area Impervious Area Summary for Subcatchment P7: 0.351 af, Depth= 2.11" Tc Length Slope Velocity Capacity Description min feet ftlft ftlsec cfs 8.8 50 0.0200 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 3.8 320 0.0400 1.40 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f.s 12.6 U) 0 0 370 Total Subcatchment P7: Hydrograph Type 11 24 2 - Year Rainfal1=2.75" Printed 11/11/2008 _ Page 40 5.66 cfs d Type q 24 -hr 2 -Year RainfalI2 75fl Runoff Area87,012 sf RunoffVolumeO 351 af Runoff Depth2 11" Flow Length37O' Tc12 6 min CN =94 zzapxvz/zz/zyzejxoy,, ipzie reeefflwA res 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad i of Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Summary for Subcatchment P7A: Runoff . 1.06 cfs © 12.15 hrs, Volume= 0.095 af, Depth= 0.58" Runoff by SCS TR-20 method, UH =SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type 11 24 -hr 2-Year Rainfall= 2.75" Tc Length Slope Velocity Capacity min feet ft/ft ft/sec cfs 10.0 100 0.0590 0.17 19.9 774 Total Area sf CN Descri•tion 20,196 85 Gravel roads, HSG B 58,520 61 >75% Grass cover, Good, HSG B 6,597 100 Pond 85,313 70 Weighted Average 78,716 Pervious Area 6,597 Impervious Area 1.7 173 0.0590 1.70 6.7 251 0.0080 0.63 1.5 250 0.0360 2.85 Description Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps Shallow Concentrated Flow, Grassed Waterwa Kv= 15.0 f. 1.06 cfs Subcatchment P7A: Hydrograph Type 11 24 2 - Year Rainfall= 2.75" Printed 11/11/2008 Pa■e41 .47 4e1)."" Type II 24 -hr 2 -Year RainfaII2 75UU Runoff Area85,313 sf Runoff Volume=O 095 af Runoff DepthO 58" Flow Length -7P4' Tc=19 9 min 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Type 11 24-hr 2 -Year Rainfall =2. 75" Prepared by Folz, Freeman, Erickson, Inc. Printed 11111/2008 H droCAD� 8.50 sln 002112 Q 2007 H droCAD Software Solutions LLC Pa e 42 Summary for Subcatchment P9: Runoff -- 2.18 cfs a@ 12.13 hrs, Volume= 0.220 af, Depth- 0.36" Runoff by SCS TR-20 method, UH =SCS, Time Span- 0.00-30.00 hrs, dt= 0.01 hrs Type I124-hr 2-Year Rainfall- 2.75" Area sf CN Descri. tion 316 304 64 316,304 Tc Length Slope Velocity Capacity Description min feet ftlft ft/sec cfs 12.3 100 0.0350 0.14 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 3.8 301 0.0350 1.31 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f• 16.1 401 Total 0 0 LL 4 Pervious Area Subcatchment P9: Hydrograph ro 1 0 r PA r*" .r * P ~1 , 74,00B i ii ie�eiii .� _ ,. /iiieiiiii�iiiiiiii 2.18 cfs Type 11 24 -hr 2 -Year RainfaII2 75" Runoff Area=316,304 sf Runoff VoIumeO 220 of Runoff DepthO 36" Flow Length4Ol SIopeO 0350 Tc=16 1 min CN64 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad inf Prepared by FoIz, Freeman, Erickson, Inc. HydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC Inflow Area = 15.285 ac, 0.00% Impervious, Inflow Depth = 0.24" for 2 -Year event Inflow -- 1.53 cfs © 12.04 hrs, Volume= 0.306 of Outflow -- 0.00 cfs © 0.00 hrs, Volume= 0.000 af, Atten= 100 %, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span= 0.00-30.00 hrs, dt- 0.01 hrs Peak Elev= 938.47' @ 25.93 hrs Surf.Area= 0.616 ac Storage= 0.306 af Plug -Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Stora• a Stora• e Descri . tion #1 938.00' 6.623 af Custom Stage Data (Irregular) Listed below Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area feet acres feet acre-feet acre -feet acres 938.00 0.590 600.0 0.000 0.000 0.590 940.00 0.700 652.0 1.288 1.288 0.712 942.00 0.820 703.0 1.518 2.807 0.842 944.00 0.950 759.0 1.768 4.575 0.996 946.00 1.100 816.0 2.048 6.623 1.164 Device Routing Invert Outlet Devices #1 Primary 942.00' 18.0" x 80.0` long Culvert CMP, end - section conforming to fill, Ke= 0.500 Outlet Invert= 941.00' S= 0.0125 Cc= 0.900 n= 0.012 Primary OutFlow Max =0.00 cfs @ 0.00 hrs HW =938.00' (Free Discharge) 1 =Culvert ( Controls 0.00 cfs) 0.00 cfs 0- [ 1 cfs Summary for Pond BI: Hydrograph Pond BI: rozwr m ra m at firm vs sr iff keiffey - rzefAdrfzzgzez/2 ce, reze/d Inflow Area=1 5.285 ac Peak Elev=938.47' Storage=O O6 af ' x 80.0' Culvert 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Type 1124 -hr 2 -Year Rainfall =2.75" Printed 11/11/2008 Page 43 Carriage House Total Hydrocad inf Prepared by FoIz, Freeman, Erickson, Inc. ydroCAD® 8.50 s/n 002112 © 2007 H drocAD Software Solutions LLC Inflow Area = 29.153 ac, 29.56% Impervious, Inflow Depth > 0.48" for 2 -Year event Inflow = 7.24 cfs a@ 12.09 hrs, Volume= 1.157 of Outflow = 1.04 cfs c 15.30 hrs, Volume= 0.948 af, Atten= 86 %, Lag= 192.2 min Primary = 1.04 cfs @ 15.30 hrs, Volume= 0.948 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev 935.98' @ 15.30 hrs Surf.Aream 45,722 sf Storage= 21,699 cf Plug -Flow detention time 319.7 min calculated for 0.948 of (82% of inflow) Center -of -Mass det. time= 234.7 min ( 1,161.8 - 927.1 ) Volume Invert Avail.Stora. e Stora ■ e Descri•tion #1 935.50' Elevation feet 935.50 936.00 938.00 940.00 Device Routine #1 Primary 0 0 Surf.Area 44,056 45,780 59,126 68,288 254,384 cf Custom Stage Data Perim. s• -ft feet 847.0 844.0 955.0 1,064.0 Summary for Pond B2: Irregular) Listed below Inc.Store Cum.Store cubic -feet cubic -feet 0 0 22,458 22,458 1 04,622 1 27,079 127,304 254,384 Wet.Area -ft s 44,056 44,641 60,633 78,261 Invert Outlet Devices 935.50` 15.0" x 879.0' long Culvert RCP, square edge headwall, Ke = 0.500 Outlet Invert= 928.00' S= 0.0085 'I' Cc= 0.900 n= 0.012 Type 11 24 2 - Year Rainfall=2. 75" Printed 11/11/2008 Pagg,44 Primary OutFlow Max =1.04 cfs © 15.30 hrs HW=935.98' TW= 928.42' (Dynamic Taiiwater) 1=Culvert (Inlet Controls 1.04 cfs tJ 2.37 fps) Hydrograph Pond B2: 7.24 cfs k 7 72 .7 7 6 i R 1.04 cfs , Inflow Area =29.153 ac Peak E1ev935 98U Storage2l,699 cf 15.0" x'879.0' Culvert 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Inflow 0 Primary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Summary for Pond B3: Inflow Area = 7.125 ac, 21.52% Impervious, Inflow Depth = 0.47" for 2 -Year event Inflow = 2.62 cfs a@ 12.19 hrs, Volume= 0.276 of Outflow = 2.14 cfs © 12.28 hrs, Volume= 0.269 af, Atten= 18 %, Lag= 5.5 min Primary = 2.14 cfs J 12.28 hrs, Volume= 0.269 af Secondary = 0.00 cfs a@ 0.00 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 939.73' @ 1 2.30 hrs Surf.Area= 843 sf Storage= 1,189 cf Plug-Flow detention time= 32.7 min calculated for 0.269 af (97% of inflow) Center -of -Mass det. time= 19.2 min ( 933.4 - 914.2 ) Volume Invert Avail.Stora e Story e Descri tion #1 938.00' 96,696 cf Custom Stage Data (Irregular) Listed below Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area feet s• -ft feet cubic -feet cubic -feet s. -ft 938.00 500 1 00.0 0 0 500 940.00 897 135.0 1,378 1,378 1,195 942.00 23,920 1,226.0 19,633 21,011 119,364 944.00 53,751 1,434.0 75,685 96,696 163,473 Device Routin . Invert Outlet Devices #1 Primary 938.42' 12.0" x 120.0' long Culvert RCP, end - section conforming to fill, Ke= 0.500 Outlet Invert= 938.24' S= 0.0015 '1' Cc= 0.900 n= 0.012 #2 Secondary 943.70' 100.0' long x 20.0' breadth Broad - Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Type 11 24 2 - Year Rainfall 2. 75" Printed 11/11/2008 Pa ■ e 45 Primary OutFlow Max =2.14 cfs a@ 12.28 hrs HW= 939.72' TW =938.24' (Dynamic Tailwater) - 1=Culvert (Barrel Controls 2.14 cfs @ 2.75 fps) Secondary OutFlow Max =0.00 cfs a@ 0.00 hrs HW=938.00' TW =935.50' (Dynamic Tailwater) ---- 24Broad- Crested Rectangular Weir ( Controls 0.00 cfs) Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC 0, 0 0 Hydrograph Pond B3: nflow Area7125 ac Peak EIev 73' Strage1,189 cf so [0.00 cfs F . ;.fN F l'� ^ r' . f fi • J W '`` 1"7",:lee • : zmeriemom 0 Type 1124 -hr 2 -Year Rainfa11= 2.75" Printed 11/1112008 Pa e 40 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Inflow . Outflow El Primary El Secondary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HydroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Volume Invert Avail.Stora• e Stora■ e Descri•tion #1 937.70' Elevation feet 937.70 938.00 940.00 Device Routing Invert Outlet Devices #1 Primary 0 Surf.Area 4 1,878 182.0 3,572 243.0 6,804 403.0 5.45 cfs Summary for Pond B4: Inflow Area = 13.365 ac, 28.52% Impervious, Inflow Depth = 0.57" for 2 -Year event Inflow = 5.88 cfs © 12.13 hrs, Volume= 0.638 af Outflow = 5.45 cfs © 12.20 hrs, Volume= 0.625 af, Atten= 7 %, Lag= 3.8 min Primary = 5.45 cfs @ 12.20 hrs, Volume= 0.625 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev 938.26' a@ 12.20 hrs Surf.Area= 3,989 sf Storage= 2,121 cf Plug -Flow detention time= 21.2 min calculated for 0.625 of (98% of inflow) Center -of -Mass det. time= 10.2 min ( 913.2 - 903.1 ) 11,008 cf Custom Stage Data (Irregular) Listed below Perim. Inc.Store Cum.Store s * -ft feet cubic -feet cubic -feet 0 0 804 804 10,204 11,008 937.90' 10.0' long x 10.0' breadth Broad - Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max =5.45 cfs @ 12.20 hrs HW= 938.26' TW- 935.66' (Dynamic Tailwater) 1 =Broad- Crested Rectangular Weir (Weir Controls 5.45 cfs 1.52 fps) Hydrograph 5.88 cfs Pond B4: Wet.Area s• -ft 1,878 3,942 12,192 Inflow Area13365 ac Peak E1ev938 26' torage=2,121 cf Type 11 24-hr 2 -Year Rainfall =2.75" Printed 11/11/2008 Pag 47 "S 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad inf Type 11 24-hr -Year Rainfall=2. 75" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 HydroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Pa e 48 Inflow Area = 13.385 ac, 25.98% Impervious, Inflow Depth = 0.54" for 2 -Year event Inflow = 1 0.85 cfs a@ 12.03 hrs, Volume= 0.605 af Outflow = 0.77 cfs @ 13.05 hrs, Volume= 0.307 af, Atten= 93 %, Lag= 61.2 min Primary m 0.77 cfs f 13.05 hrs, Volume= 0.307 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Starting EIev= 937.00' Surf.Area= 16,501 sf Storage= 16,179 cf Peak EIev- 937.90' © 13.05 hrs Surf.Area= 21,503 sf Storage= 30,720 cf (14,541 cf above start) Plug -Flow detention time= (not calculated: initial storage excedes outflow) Center -of -Mass det. time 168.6 min ( 1,013.7 - 845.0 ) Volume Invert Avail.Stora• e Stora ■ e Descri•tion #1 Elevation feet 936.00 938.00 940.00 Device Routin #1 Primary 12 10 9 8-- 5 4 .. 3 2 -.. 1 - 0 0 936.00' 87,809 cf Custom Stage Data (Irregular) Listed below Perim. Inc.Store Cum.Store s• -ft feet cubic -feet cubic -feet 483.0 0 0 624.0 32,358 32,358 779.0 55,452 87,809 Surf.Area 10,936 22,066 33,801 Summary for Pond B5: 10.85 cfs Hydrograph Pond B5: W et.Area s• -ft 10,936 23,406 40,768 Invert Outlet Devices 937.80' 10.0' long x 10.0' breadth Broad - Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max =0.77 cfs @ 13.05 hrs HW =937.90' TW= 935.89' (Dynamic Tailwater) 1 -Broad- Crested Rectangular Weir (Weir Controls 0.77 cfs © 0.78 fps) 0.77 cfs #s"./iffie eee27. FAM9 rreiff A I iftl? Arlo nflow Areai 3385 ac Peak EUev937 90U Storage3O72O cf 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Inflow 0 Primary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8,50 s/n 002112 © 2007 H droCAD Software Solutions LLC Inflow Area = 7.261 ac, 0.00% Impervious, Inflow Depth = 0.36" for 2 -Year event Inflow = 2.18 cfs @ 12.13 hrs, Volume= 0.220 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100 %, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 947.64' ac 24.91 hrs Surf.Area= 0.434 ac Storage= 0.220 af Plug -Flow detention time= (not calculated: initial storage excedes outflow) Center -of -Mass det. time= (not calculated: no outflow) Volume Invert Avail.Stora•e Storage Description 0 0 #1 947.00' Device Routine #1 Primary 0.00 cfs 0 -- 4 Summary for Pond CITY POND: 1.961 af Custom Stage Data (Irregular) Listed below Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area feet acres feet acre -feet acre -feet acres 947.00 0.144 289.0 0.000 0.000 0.144 948.00 0.600 598.0 0.346 0.346 0.645 950.00 1.035 819.0 1.615 1.961 1.218 Type 11 24 2 - Year Rainfall = 2.75 ►► Printed 11/11/2008 Pa.e49 Invert Outlet Devices 949.00' 12.0" x 950.0' long Culvert CMP, end - section conforming to fill, Ke= 0.500 Outlet Invert= 939.00' S= 0.0105 '/' Cc= 0.900 n= 0.012 Primary OutFlow Max =0.00 cfs 0.00 hrs HW =947.00' TW = 937.00' (Dynamic Tailwater) t--1 =Culvert ( Controls 0.00 cfs) rowdoomedresoffzizerza i r' / d swim or-J- tefzz, d re -moo& ro-Azi reowzdrd 2.18 cfs Pond CITY POND: Hydrograph nflow Are7261 ac Peak EIev=947 64° Storage=O 220 af 2O "x95OOCuIvert 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) ri Inflow 0 Primary Carriage House Total Hydrocad inf Type 11 24-hr 2 -Year Rainfall=2. 75" Prepared by Folz, Freeman, Erickson, Inc. Printed 1111112008 ydroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Page 50_ [57] Hint: Peaked at 920.49' (Flood elevation advised) Summary for Pond EX. CB: Inflow Area = 47.602 ac, 38.84% Impervious, Inflow Depth > 0.25" for 2 -Year event Inflow = 0.93 cfs © 12.03 hrs, Volume= 0.976 of Outflow = 0.93 cfs @ 12.04 hrs, Volume= 0.976 af, Atten = 0 %, Lag= 0.6 min Primary = 0.93 cfs a[7 12.04 hrs, Volume= 0.976 of Routing by Sim -Route method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Peak Elev= 920.49' @ 12.04 hrs Device Routing Invert Outlet Devices #1 Primary 920.03' 15.0" x 171.0' Long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 918.00' S= 0.0119 '/' Cc= 0,900 n= 0.012 Concrete pipe, finished Primary OutFlow Max =0.93 cfs @ 12.04 hrs HW= 920.49' (Free Discharge) 1 =Culvert (Inlet Controls 0.93 cfs © 2.30 fps) TA- U Pond EX. CB: Hydrograph �.93 cfs] 0.93 cfs .,g#XeMr.A'W.,,a7edFAO 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Inflow 0 Primary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HydroCAD® 8.50 s/n 002112 10 2007 HydroCAD Software Solutions LLC Summary for Pond Pond 1: Inflow Area = 46.742 ac, 38.90% Impervious, Inflow Depth > 0.66" for 2 -Year event Inflow = 16.12 cfs a@ 12.04 hrs, Volume= 2.556 of Outflow = 1.10 cfs @ 21.66 hrs, Volume= 1.271 af, Atten= 93 %, Lag= 577.4 min Discarded = 0.24 cfs © 21.66 hrs, Volume= 0.350 of Primary = 0.85 cfs @ 21.66 hrs, Volume= 0.922 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Starting Elev= 927.00' Surf.Area= 29,423 sf Storage= 110,877 cf Peak Elev= 928.66' J 21.66 hrs Surf.Area= 46,319 sf Storage= 178,606 cf (67,729 cf above start) Plug -Flow detention time= (not calculated: initial storage excedes outflow) Center -of -Mass det. time= 338.8 min ( 1,307.9 - 969.0 ) Volume Invert Avail.Stora• e Storage Descri tion #1 920.00' Elevation feet 920.00 927.00 928.00 930.00 932.00 934.00 487,005 cf Surf.Area Perim. Inc.Store s g -ft feet cubic -feet 5,442 735.0 0 29,423 1,369.0 110,877 43,440 1,434.0 36,205 52,160 1,472.0 95,467 61,112 1,511.0 113,154 70,297 1,632.0 131,302 Custom Stage Data (Irregular) Listed below Device Routing Invert Outlet Devices 110,877 147,082 242,549 355,703 487,005 #1 Primary 928.00' 8.0" x 293.0' long Culvert RCP, mitered to conform to fill, Ke= 0.700 Outlet Invert= 920.03' S= 0.0272 '1' Cc= 0.900 n= 0.012 #2 Device 1 925.00' 2.50' W x 2.00' H Vert. Orifice /Grate C= 0.600 #3 Device 1 932.80' 48.0" Horiz. Orifice /Grate Limited to weir flow C= 0.600 #4 Secondary 934.00' 15.0' long x 10.0' breadth Broad - Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 #5 Discarded 927.00' 0.600 inihr Exfiltration over Wetted area above invert Excluded Wetted area = 111,848 sf Discarded OutFlow Max =0.24 cfs a@ 21.66 hrs HW= 928.66' (Free Discharge) - 5 =Exfiltration (Exfiltration Controls 0.24 cfs) Primary OutFlow Max=0.85 cfs @ 21.66 hrs HW= 928.66' TW=920.47' (Dynamic Taifwater) t-- Culvert (Inlet Controls 0.85 cfs @ 2.44 fps) ----2 =Orifice /Grate (Passes 0.85 cfs of 19.56 cfs potential flow) 3 =Orifice /Grate ( Controls 0.00 cfs) Secondary OutFlow Max =0.00 cfs © 0.00 hrs HW= 927.00' (Free Discharge) t-4 =Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Cum.Store Wet.Area cubic - feet_ (sq -ft) 0 5,442 111,848 126,415 1 35,670 145,397 175,823 Type 11 24 2 - Year Rainfall=2. 75" Printed 11/11/2008 Page 51 Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC 18_. 17 16 -; 15 14. 13 12 11 10 : 9. Pond Pond 1: Hydrograph Inflow Area46742 ac Peak E1ev928 66' Storage - 178,606 cf 3 0.85 nfr 0.00 cfs 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Type 1124 -hr 2 -Year Rainfall = 12.75" Printed 11/11/2008 Pa •e 52 EI Inflow IA Outflow El Discarded El Primary Secondary Carriage House Total Hydrocad inf Prepared by FoIz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 CD 2007 H droCAD Software Solutions LLC Inflow Area Inflow = Outflow = Primary = Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 936.16' @ 12.25 hrs Surf.Area= 7,197 sf Storage= 8,921 cf Plug -Flow detention time= 220.7 min calculated for 0.267 af (60% of inflow) Center -of -Mass det. time= 1 03.9 min ( 920.9 - 817.0 ) Volume Invert Avail.Stora.e Storage Descri•tion #1 934.00' Elevation Surf.Area (feet) (sq-ft) 934.00 1,721 936.00 6,597 938.00 15,701 Device Routine Invert #1 Primary 930.16' #2 Device 1 936.00' Primary OutFlow Max =2.72 cfs © 12.25 hrs HW= 936.16' TW= 927.69' (Dynamic Tailwater) =Culvert (Passes 2.72 cfs of 19.48 cfs potential flow) t-a- -2 =Orifice /Grate (Weir Controls 2.72 cfs @ 1.32 fps) 0 0 3.956 ac, 49.27% Impervious, Inflow Depth = 1.35" for 2 -Year event 6.39 cfs @ 12.05 hrs, Volume= 0.446 af 2.73 cfs © 12.25 hrs, Volume= 0.267 af, Atten= 57 %, Lag= 11.8 min 2.73 cfs @ 12.25 hrs, Volume= 0.267 af 4 5 29,442 cf Perim. Inc.Store Cum.Store Wet.Area (feet) (cubic -feet) (cubic -feet) (sq -ft) 161.0 0 0 1,721 421.0 7,792 7,792 13,777 815.0 21,650 29,442 52,549 Outlet Devices 21.0" x 322.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 928.00' S= 0.0067 '1' Cc= 0.900 n= 0.013 48.0" Horiz. Orifice /Grate Limited to weir flow C= 0•600 Summary for Pond Pond B7A: Custom Stage Data (Irregular) Listed below (Reca lc ) Hydrograph 6.39 cfs 197;01 VIRre Pond Pond B7A: nflow Rrea =3.956 ac eak E1ev93 16W Storage8,921 cf 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Type 11 24-hr 2 -Year Rainfall=2. 75" Printed 11/11/2008 Pa .e 53 0 Inflow 0 Primary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HydroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Subcatchment GWI : Subcatchment GW2: Subcatchment P1: Subcatchment P10: Subcatchment P2: Subcatchment P3: Subcatchment P4: Subcatchment P5: Subcatchment P6: Subcatchment P7: Subcatchment P7A: Subcatchment P9: Pond BI: Pond B2: Pond B3: Pond B4: Pond B5: Pond CITY POND: Pond EX. CB: Pond Pond 1: Time span =0.00 -30.00 hrs, dt -0.01 hrs, 3001 points Runoff by SCS TR -20 method, UH=SCS Reach routing by Sim -Route method - Pond routing by Sim -Route method Type 1I 24 - hr 1O -Year Rainfalf4.20" Printed 11/11/2008 Page 54 Runoff Area =92,429 sf 87.87% Impervious Runoff Depth=3.52" Flow Length =250' Tc=6.8 min CN =94 Runoff 11.75 cfs 0.623 of Runoff Area = 37.462 sf 35.82% Impervious Runoff Depth =1.74" Flow Length =280' Slope =0.0200'1' Tc =10.6 min CN=74 Runoff =2.26 cfs 0.125 af Runoff Area =120,067 sf 0.00% Impervious Runoff Depth = 1.21" Flow Length =207' Slope =0.0200 '1' Tc =9.5 min CN =66 Runoff =5.04 cfs 0.277 of Runoff Area =310,366 sf 21.52% Impervious Runoff Depth = 1.27" Flow Length =690' Slope - 0.0250 '1' Tc =21.6 min CN =67 Runoff =8.97 cfs 0.754 af Runoff Area - 545.736 sf 0.00% Impervious Runoff Depth = 0.76" Flow Length = 1.421 Tc=34.2 min CN =58 Runoff =5.60 cfs 0.791 af Runoff Area'271,794 sf 36.51 % Impervious Runoff Depth =1.67" Flow Length =892' Tc=14.5 min CN-73 Runoff=13.60 cfs 0.870 of Runoff Area=104,685 sf 55.32% Impervious Runoff Depth = 2.29" Flow Length -250' Tc =10.1 min CN =81 Runoff =8.44 cfs 0.459 of Runoff Area= 266.734 sf 56.79% Impervious Runoff Depth = 2.37" Flow Length =250' Tc =10.8 min CN =82 Runoff =21.70 cfs 1.212 of Runoff Area= 501,430 sf 49.95% Impervious Runoff Depth= 2.13" Flow Length =755' Tc =18.6 min CN =79 Runoff= 28.34 cfs 2.040 of Runoff Area = 87.012 sf 90.00% Impervious Runoff Depth =3.52" Flow Lengthv370' Tc =12.6 min CN =94 Runoff =9.17 cfs 0,586 of Runoff Area =85,313 sf 7.73% Impervious Runoff Depth =1.46" Flow Length =774' Tc =19.9 min CN =70 Runoff =3.08 cfs 0.239 of Runoff Area = 316.304 sf 0.00% Impervious Runoff Depth =1.09" Flow Length'401 Slope =0.0350'1' Tc =16.1 min CN=64 Runoff =9.00 cfs 0.658 of Peak Elev =939.66' Storage =1.068 af Inflow =6.49 cfs 1.068 af 18.0" x 80.0' culvert Outflow=0.00 cfs 0.000 of Peak Elev = 936.67' Storage= 57.454 cf Inflow -26.98 cfs 2.977 af 15.0" x 879.0' Culvert Outflow=4.39 cfs 2.713 of Peak Elev =940.61' Storage =7,331 cf Inflow =8.97 cfs 0.754 af Primary =3.39 cfs 0.747 af Secondary-0.00 cfs 0.000 af Outflow=3.39 cfs 0.747 af Peak EIev'938.59' Storage =3,825 cf Inflow =16.25 cfs 1.617 af Outflow -15.52 cfs 1.604 af Peak Elev =938.23' Storage =38,839 cf Inflow =21.70 cfs 1.212 af Outflow -7.38 cfs 0.914 af Peak Elev = 948.39' Storage =0.658 af Inflow -9.00 cfs 0.658 af 12.0" x 950.0' culvert Outflow =0.00 cfs 0.000 of Peak Elev- 920.78' Inflow =2.26 cfs 2.994 af 15.0" x 171.0' Culvert Outflow =2.26 cfs 2.994 af Peak EIev- 930.43' Storage = 266.756 cf Inflow =43.44 cfs 6.022 af Discarded =0.36 cfs 0.508 of Primary =2.15 cfs 2.870 of Secondary'0.00 cfs 0.000 of Outflow=2.51 cfs 3.379 of Carriage House Total Hydrocad inf Type 11 24 -hr 10 -Year Rainfall =4.20" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 HydroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Pa e 55 Pond Pond B7A: Peak Eiev= 936.40' Storage = 10,739 cf Inflow =11.63 cfs 0.825 af Outflow=10.45 cfs 0.646 af Total Runoff Area = 62.886 ac Runoff Volume = 8.633 af Average Runoff Depth = 1.65" 70.60% Pervious = 44.396 ac 29.40% Impervious = 18.491 ac Carriage House Total Hydrocad inf Type 1124 -hr 1O -Year Rainfall =4.20" Prepared by Folz, Freeman, Erickson, inc. Printed 11/11/2008 H droCADD 8.50 sln 002`112 2007 H droCAD Software Solutions LLC Pa e 56 Summary for Subcatchment GW1 Runoff 11.75 cfs a@ 11.98 hrs, Volume= 0.623 af, Depth= 3.52" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 11 24 -hr 10 -Year Rainfall= 4.20" 92,429 11,211 81,218 Tc Length min feet 6.1 0.7 6.8 250 Total 13 12' 11 1 9 8 Area sf CN Description 11,211 81,218 5 3 2 1 ' 0 0 61 98 94 50 0.0200 200 0.0600 >75% Grass cover, Good, HSG B Paved parking & roofs Weighted Average Pervious Area Impervious Area Slope Velocity Capacity ft/ft ft/sec cfs 0.14 4.97 Description Sheet Flow, Grass: Short n= 0.150 P2= 2.75" Shallow Concentrated Flow, Paved Kv= 20.3 f• s I 0 I 0 ��/, l/ /, / / / / /I / / I / / / / /O /i.� // of / /� // 11.75 cfs Subcatchment GWI Hydrograph Type it 24 -hr 10 -Year RainfatI4 2O" Runoff Area92,429 §f Runoff VoIumeO 623 of unoff Depth3.52' Flow Len . g th -250' T c6 8 min 4 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Runoff Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 1124-hr 10 -Year Rainfall= 4.20" Tc Length min feet ft/ft ft/sec cfs 0 8.8 2.26 cfs @ 12.03 hrs, Volume= Area sf CN Descri +tion 24,044 61 13,418 98 37,462 74 24,044 13,418 50 0.0200 Slope Velocity Capacity 4 >75% Grass cover, Good, HSG B Paved •arkin. & roofs Weighted Average Pervious Area Impervious Area Summary for Subcatchment GW2: Description 2.26 cfs Hydrograph 0.125 af, Depth= 1.74" 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 1.8 230 0.0200 2.12 Shallow Concentrated Flow, Grassed Waterway Kva 15.0 f s 10.6 280 Total Subcatchment GW2: Type 1124 -hr 1O -Year Rainfall =4.20" Printed 11/11/2008 Pa ■ e 57 pAd I ra 00 004 --A • _/y-i Type 11 24 -hr 10 -Year Rainfall=4 20" Runoff Area37,462 sf RunoffVolume0 125 of Runoff Depthl 74" Flow Length=280' Slope=O 0200 '1' Tc=10 6 min CN =74 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) ❑ Runoff Carriage House Total Hydrocad inf Type 11 24-hr 10-Year Rainfall =4.20" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 jydroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Pa a513_ Summary for Subcatchment P1: Runoff = 5.04 cfs a@ 12.02 hrs, Volume= 0.277 af, Depth= 1.21" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 11 24-hr 10 -Year Rainfall = 4.20" Area sf CN Description 120,067 66 120,067 Pervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 9.5 207 0.0200 0.36 3 L 2 LagICN Method, 5.04 cfs Subcatchment P1: Hydrograph i i f 000 0 0/4 ‘,#''A~dozi o �i� /ii�,i - Type 11 2:4hr 10 -Year RainfaII4 20" Runoff Areal2O,067 sf Runoff Vo1ume0277 of RunoffDepthl 21vw Flow Length2OT SIopeO 0200 Tc9 5 min CN66 5 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Type 11 24-hr 1O -Year Rainfa11 =4.20" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC __ Page 59 Runoff = 8.97 cfs @ 12.17 hrs, Volume= Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt- 0.01 hrs Type 1124-hr 10-Year Rainfall= 4.20" Area (sf) CN Description Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs Lag/CN Method, Subcatchment P10: 21.6 10 243,573 58 Meadow, non - grazed, HSG 8 53,145 98 Paved parking & roofs 13,648 100 Pond 31 0,366 67 Weighted Average 243,573 Pervious Area 66,793 Impervious Area 690 0.0250 0.53 Summary for Subcatchment P10: Hydrograph 0.754 af, Depth= 1.27" Type 11 24 -hr 10 -Year Rainfa1fr4 20" Runoff Area310,366 sf Runoff Volume=0 754 of Runoff Depthl 27 Flow Length =690' SIopeO 0250 '1' Tc21.6 min CN =67 • • • • • • • • 8.97 cfs 1"ZA'r. PFZe."/- #70 P I I ! 1 11 • I min 114 ri/P"-"Z � i 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad inf Type 11 24-hr 10 -Year Rainfall =4.20" Prepared by FoIz, Freeman, Erickson, Inc. Printed 11/11/2008 jydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC Page 60 Runoff = 5.60 cfs a@ 12.35 hrs, Volume= Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 -Year Rainfall= 4.20" Area sf CN Descri • tion 545 736 545,736 58 Meadow non- Pervious Area Summary for Subcatchment P2: razed H S G B Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 7.5 50 0.0300 0.11 26.7 1,371 0.0150 34.2 1,421 Total 0 Hydrograph 0.791 af, Depth= 0.76" Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 0.86 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f Subcatchment P2: 0 viii. ��eiii, . r. � i'i� iiiiii r iii i i 5.60 cfs Type II 24 -Mr 10 -Year RainfaII4 2O' unoff Area=545,736 s RunoffVolumeO 791 af Runoff. DepthO 76'' FIow Lengthl,42'F Tc34 2 min CN =58 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) d Runoff Carriage House Total Hydrocad inf Prepared by Foiz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Runoff � • 7 5 3 Summary for Subcatchment P3: -- - 13.60 cfs a 12.07 hrs, Volume= s 0.870 af, Depth= 1.67" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type 1124 -hr 10 -Year Rainfall=4.20" Area sf CN Descri• tion 85,649 98 11,784 98 172,551 58 1 810 100 Paved parking & roofs Building Meadow, non - grazed, HSG B Pond 271,794 73 Weighted Average 172,551 Pervious Area 99,243 Impervious Area Slope Velocity Capacity Tc Length min feet ft/ft ft/sec cfs 9.3 100 0.0700 0.18 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 2.4 144 0.0200 0.99 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 2.1 365 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps 0.7 283 0.0200 6.95 5.46 Circular Channel (pipe), Diam= 12.0" Area= 0.8 sf Perim= 3.1f r= 0.25' n= 0.012 14.5 892 Total Description 13.60 cfs Subcatchment P3: Hydrograph id OF 00 000 00 0/ 0 Airote,A f ir~/ZeZeArAWFA Wd:11"4.7"14( Type 1124 -hr 10 -Year Rainfall=4.20" Printed 11/11/2008 Pa •e 61 Type 11 24-hr 10 -Year Rainfall= 4.20 Runoff Area271 ,794 sf Runoff Volume=O 870 af unoff Dept Flow Length=892' Tc =14.5 min 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Runoff = 8.44 cfs a@ 12.02 hrs, Volume= Runoff by SCS TR -20 method, UH -SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type I124-hr 10 -Year Rainfall= 4.20" 6.7 10.1 Area (sf) CN Description 46,778 58 14,532 98 2,500 98 40,875 99 104,685 81 46,778 57,907 Tc Length min feet 50 0.0400 250 Total Woods /grass comb., Good, HSG B Building Paved parking & roofs Pond Weighted Average Pervious Area Impervious Area Slope Velocity Capacity ft/ft ft/sec cfs 0.12 3.4 200 0.0200 0.99 Summary for Subcatchment P4: Description 8.44 cfs Subcatchment P4: Hydrograph 0.459 af, Depth= 2.29" Type 1124 - hr 1O - Year Rainfall =4.20" Printed 11/11/2008 Pare 62 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps PA I P / 10 t 1 /� / / /.�' / /.� // / / /�' & vim... e 1124 -hr °10 -Year RainfaII4 20U Runoff Area=104,685 sf Runoff VoIumeO 4S9 af Runoff Depth2 29" low Leiijth=25O' Tc1 0.1 nim 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad inf Type 11 24-hr 10-Year Rainfall=4.20" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 HydroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Pagg_63 Summary for Subcatchment P5: Runoff = 21.70 cfs @ 12.03 hrs, Volume= 1.212 af, Depth= 2.37" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type II 24-hr 10-Year Rainfall=4.20" Tc Length min feet ft/ft ft/sec cfs 8.8 50 0.0200 0.09 2.0 200 0.0550 1.64 10.8 24 23 22 21 20 19 18 - 17 16 15 i 14 o 13 12- - 11 10 9 6 5 3 Area (sf) CN Description 32,966 58 Woods/grass comb., Good, HSG B 141,646 98 Paved parking & roofs 9,837 99 Water 82 285 61 >75% Grass cover Good HSG B 266,734 115,251 151,483 250 Total 82 Weighted Average Pervious Area Impervious Area Slope Velocity Capacity Description Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f Subcatchment P5: Hydrograph 21.70 cfs PA 10 or 7, 2 (0 ziF z/z/ Nemo rz/zie Type r e r ainfall=4 20 Runoff Area266,734 sf Runoff Volunie=1 212 af Runoff Depth=2.37" Flow Length=250' Tc= 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Runoff Tc Length 6.7 11.9 18.6 30 - :. 28 26 24 22 20 12 10•:. 8 2 = 28.34 cfs a@ 12.11 hrs, Volume= Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 1124 -hr 10 -Year Rainfall= 4.20" Area (sf) CN Description 211,691 98 Paved roads w /curbs & sewers 177,722 61 >75% Grass cover, Good, HSG B 38,796 100 Pond 73 221 60 Meadow non- • razed HSG B 501,430 250,943 250,487 50 0.0400 705 0.0200 755 Total 79 Weighted Average Pervious Area Impervious Area Slope Velocity Capacity min feet Rift ft/sec cfs Summary for Subcatchment P6: Description 2.040 af, Depth= 2.13" 0.12 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 0.99 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f•s Type II 24 10 - Year Rainfall =4.20" Printed 11/11/2008 Pa •e 64 28.34 cfs Hydrograph Subcatchment P6: i� 1/ 0 heo 0,0 ie ii z‘ozzze 0 re Jfezeir • is • • m ell 24hr1QYea RainfaII4 2O' unoff Area5Ol ,430 sf Runoff VoIume2 040 af Runoff Depth2 13" Fkw Length7 Tc18 6 min CN79 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Prepared by FoIz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Runoff = 9.17 cfs a@ 12.04 hrs, Volume= Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 1124-hr 10 -Year Rainfall =4.20" Tc Length Slope Velocity Capacity Description min feet ftlft ftlsec cfs 8.8 50 0.0200 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 3.8 320 0.0400 1.40 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f 12.6 0 10- Area sf CN Description 78,311 98 Paved parking & roofs 8,701 61 >75% Grass cover, Good, HSG B 87,012 94 8,701 78,311 370 Total Weighted Average Pervious Area Impervious Area Summary for Subcatchment P7: Subcatchment P7: Hydrograph 0.586 af, Depth= 3.52" Type 11 24 10 - Year Rainfall =4.20" Printed 11/11/2008 Pa 65 O / o f. 0 0 zeiRozwo yz, fog ezei 5 9.17 cfs Type 1124 -hr 10 -Year Rainfall=4 20" Runoff Area87,012 sf Runoff Volume=0 586 af Runoff Depth3 52" Fkw Length370' c =12 '.6 min CN =94 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) © Runoff Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Runoff = 3.08 cfs a© 12.14 hrs, Volume= Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 1124-hr 10 -Year Rainfall= 4.20" 19.9 Area sf CN Descri . tion 20,196 85 58,520 61 6,597 100 85,313 70 Weighted Average 78,716 Pervious Area 6,597 Impervious Area 774 Total Gravel roads, HSG B >75% Grass cover, Good, HSG B Pond Summary for Subcatchment PM: Tc Length Slope Velocity Capacity Description min feet ft/ft ftlsec cfs 10.0 100 0.0590 0.17 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 1.7 173 0.0590 1.70 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 6.7 251 0.0080 0.63 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 1.5 250 0.0360 2.85 Shallow Concentrated Flow, Grassed Waterwa Kv= 15.0 f • s 3.08 cfs Subcatchment P7A: Hydrograph 10, 1 1 , 0 j.�iiiii�ir�ir.�.ir� 0.239 af, Depth= 1.46" Type 1124 - hr 10 - Year Rainfall =4.20" Printed 11/11/2008 Pa •e 66 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 D 2007 H droCAD Software Solutions LLC Runoff _ 9.00 cfs 12.10 hrs, Volume= Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 11 24 -hr 10 -Year Rainfa!I= 4.20" 10 Area (sf) CN Description 316 304 64 316,304 Tc Length Slope Velocity Capacity Description min feet ft fi ftlsec cfs 12.3 100 0.0350 0.14 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 3.8 301 0.0350 1.31 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f 16.1 401 Total Pervious Area 9.00 cfs Or 10 Odd 4P AArzzez.:z/ze ;." f#7, 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Summary for Subcatchment P9: Hydrograph Time (hours) 0.658 af, Depth= 1.09" Subcatchment P9: Type 11 24-hr 10 -Year Rainfa11 =4.2O" Printed 11/11/2008 Pa • e 67 Type 11 24 -hr 10 -Year Rainfall=4 20 Runoff Area316,304 sf Runoff Volume=0 658 of Runoff Depth1 09' Flow Length=40V Slope=0 0350 '1' Tc=16 1 min CN =64 ❑ Runoff Carriage House Total Hydrocad i of Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Inflow Area = 15.285 ac, 0.00% Impervious, Inflow Depth = 0.84" for 10 -Year event Inflow = 6.49 cfs © 12.35 hrs, Volume= 1.068 of Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100 %, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 939.66' @ 25.93 hrs Surf.Area= 0.681 ac Storage= 1.068 af Plug -Flow detention time= (not calculated: initial storage excedes outflow) Center -of -Mass det. time= (not calculated: no outflow) Volume Invert Avail.Stora• a Stora• e Descri .tion #1 938.00' 6.623 af Custom Stage Data (Irregular) Listed below Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (acres) (feet) (acre -feet) (acre -feet) (acres) 938.00 0.590 600.0 0,000 0.000 0.590 940.00 0.700 652.0 1.288 1.288 0.712 942.00 0.820 703.0 1.518 2.807 0.842 944.00 0.950 759.0 1,768 4.575 0.996 946.00 1.100 816.0 2.048 6.623 1.164 D evice Routing Invert Outlet Devices #1 Primary 942.00' 18.0" x 80.0' long Culvert CMP, end - section conforming to fill, Ke= 0.500 Outlet Invert= 941.00' S= 0.0125 '1' Cc= 0.900 n= 0.012 Primary mary OutFlow Max =0.00 cfs a© 0.00 hrs HW= 938.00' (Free Discharge) 1= Culvert ( Controls 0.00 cfs) TOOMETWeS deloomo,wie 0 00 0 cfs 4 Summary for Pond I Hydrograph [6.49cfs Pond BI nflow Areal 5285 ac Peak E1ev939 66' Storagel 068 af 0" x 8U.0` Culvert 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Type 1124 -hr 10 -Year Rainfall =4.20" Printed 11/11/2008 Pa.e 68 Ei Inflow 0 Primary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Inflow Area = 29.153 ac, 29.56% Impervious, Inflow Depth > 1.23" for 10 -Year event Inflow = 26.98 cfs © 12.10 hrs, Volume= 2.977 af Outflow = 4.39 cfs © 13.71 hrs, Volume= 2.713 af, Atten= 84 %, Lag= 96.3 min Primary = 4.39 cfs J 13.71 hrs, Volume= 2.713 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 936.67' © 13,71 hrs Surf.Area= 50,244 sf Storage= 57,454 cf Plug -Flow detention time= 233.9 min calculated for 2.713 af (91 % of inflow) Center -of -Mass det. time= 186.9 min ( 1,065.5 - 878.6 ) Volume Invert Avail.Stora ■ e Stora• e Descri•tion #1 935.50' Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area feet s -ft feet cubic -feef cubic -feet s -ft 935.50 44,056 847.0 0 0 44,056 936.00 45,780 844.0 22,458 22,458 44,641 938.00 59,126 955.0 104,622 127,079 60,633 940.00 68,288 1,064.0 127,304 254,384 78,261 Device Routing Invert Outlet Devices #1 Primary 935.50' 15.9" x 879.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert = 928.00' S= 0.0085 'i' Cc= 0.900 n= 0.012 Primary OutFlow Max =4.39 cfs © 13.71 hrs HW= 936.67' TW= 929.54' (Dynamic Tailwater) 1 Culvert (Inlet Controls 4.39 cfs @ 3.68 fps) 30 28 26 24 20 18 16 v 14 12 10 8 2 254,384 cf Custom Stage Data (Irregular) Listed below AffediediN 4.39 cfs 0 Summary for Pond B2: 26.98 cfs Hydrograph Pond B2: nfilow Area- 29.153 ac Peak E1ev936 67 orage= 5T,454 cf x 879A' Culvert 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Type 1124 -hr 14 -Year Rainfall =4.20" Printed 11111/2008 Pa • e 69 0 Inflow 0 Primary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC Volume #1 Elevation feet 938.00 940.00 942.00 944.00 Invert Avail.Storage Storage Description 938.00' 96,696 cf Surf.Area Perim. s• -ft feet 500 100.0 897 135.0 23,920 1,226.0 53,751 1,434.0 Summary for Pond B3: Inflow Area = 7.125 ac, 21.52% Impervious, Inflow Depth = 1.27" for 10 -Year event Inflow = 8.97 cfs a@ 12.17 hrs, Volume= 0.754 of Outflow = 3.39 cfs a@ 12.49 hrs, Volume= 0.747 af, Atten= 62 %, Lag= 19.7 min Primary = 3.39 cfs a@ 12.49 hrs, Volume= 0.747 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 940.61' @ 12.49 hrs Surf.Area= 7,878 sf Storage= 7,331 cf Plug -Flow detention time= 25.8 min calculated for 0.747 af (99% of inflow) Center -of -Mass det. time= 20.6 min ( 898.1 - 877.5 ) Custom Stage Data (Irregular) Listed below lnc.Store Cum.Store cubic -feet cubic -feet 0 0 1,378 1,378 19,633 21,011 75,685 96,696 Wet.Area s. -ft 500 1,195 119,364 1 63,473 Type 1124 - hr 10 - Year Rainfall=4. 20" Printed 11/11/2008 Page 70 Device Routing Invert Outlet Devices #1 Primary 938.42' 12.0" x 120.0' long Culvert RCP, end - section conforming to fill, Ke= 0.500 Outlet Invert= 938.24' S= 0.0015 '1' Cc= 0.900 n= 0.012 #2 Secondary 943.70' 104.4' long x 20M' breadth Broad - Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 P rimary OutFlow Max =3.39 cfs a@ 12.49 hrs HW=940.61' TW= 938.29' (Dynamic Tailwater) 1 =Culvert (Barrel Controls 3.39 cfs @ 4.32 fps) Secondary OutFlow Max =0.00 cfs @ 0.00 hrs HW= 938.00' TW= 935.50' (Dynamic Tailwater) 6 t-- -2 =Broad - Crested Rectangular Weir ( Controls 0.00 cfs) Carriage House Total Hydrocad inf Prepared by Fofz, Freeman, Erickson, Inc. ydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC Hydrograph 8.97 cfs 3.39 cfs 3.39 cfs Pond B3: of I owAiea=7.125 ac Peak EIev=940 61 Storage7,331 F� � I r' ' P 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Type 1124 -hr 10 -Year Rainfall =4.20 Printed 11/11/2008 _Bagel! EI Inflow 1..1 Outflow 0 Primary 0 Secondary Carriage House Total Hydrocad inf Type II 24-hr 1O -Year Rainfall=4.20" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 H droC 8.50 sln X02112 a 2007 H droCAD Software Solutions LLC Page 72 Inflow Area = 13.365 ac, 28.52% Impervious, Inflow Depth = 1.45" for 10 -Year event Inflow = 16.25 cfs © 12.07 hrs, Volume= 1.617 af Outflow = 15.52 cfs @ 12.12 hrs, Volume= 1.604 af, Atten= 4 %, Lag= 2.7 min Primary = 15.52 cfs @ 12.12 hrs, Volume= 1.604 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 938.59' a@ 12.12 hrs Surf.Area= 4,529 sf Storage= 3,825 cf Plug -Flow detention time 11.5 min calculated for 1.604 af (99% of inflow) Center -of -Mass det. time 6.9 min ( 881.0 - 874.2 ) Volume Invert Avail.Stora. a Stora• e Descri•tion #1 937.70' Elevation feet 937.70 938.00 940.00 Device Routine #1 Primary 18 17 16 15• 14 13 12 .= 11 u) 1 O 0 • 9: • 8': 7 6 5- . 4. 3 2. 1 .. 0 0 11,008 cf Custom Stage Data (Irregular) Listed below Surf.Area Perim. Inc.Store Cum.Store s • -ft feet cubic -feet cubic -feet 1,878 182.0 0 0 3,572 243.0 804 804 6,804 403.0 10,204 11,008 Invert Outlet Devices 937.90' 10.0' long x 10.0' breadth Broad - Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max =15.51 cfs @ 12.12 hrs HW= 938.59' TW=935.92' (Dynamic Tailwater) =Broad- Crested Rectangular Weir (Weir Controls 15.51 cfs J 2.24 fps) ." /, ../,/../.ill 4~:effifferrA97%/10 16.25 cfs Summary for Pond B4: Hydrograph Pond B4: Wet.Area s• -ft 1,878 3,942 12,192 Inflow Area1:3365 ac eak Eev938 Storage c 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) I Inflow 0 Primary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Summary for Pond B5: Inflow Area = 13.385 ac, 25.98% Impervious, Inflow Depth = 1.09" for 10 -Year event Inflow = 21.70 cfs © 12.03 hrs, Volume= 1.212 af Outflow = 7.38 cfs @ 12.20 hrs, Volume= 0.914 af, Atten= 66 %, Lag= 10.6 min Primary = 7.38 cfs @ 12.20 hrs, Volume= 0.914 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Starting Elev= 937.00' Surf.Area= 16,501 sf Storage= 16,179 cf Peak Elev= 938.23' © 12.20 hrs Surf.Area= 23,438 sf Storage= 38,839 cf (22,660 cf above start) Plug -Flow detention time= 302.4 min calculated for 0.542 af (45% of inflow) Center -of -Mass det. time= 75.0 min ( 900.1 - 825.1 ) Volume Invert Avail.Stora■ e Stora• e Descri tion #1 936.00` Elevation feet 936.00 938.00 940.00 24 22 20 18 16 8 4• 2 0• 0 Surf.Area 87,809 cf Custom Stage Data (Irregular) Listed below Perim. Inc.Store Cum.Store Wet.Area s . -ft feet cubic -feet cubic -feet s• -ft 0 0 10,936 32,358 32,358 23,406 55,452 87,809 40,768 10,936 483.0 22,066 624.0 33,801 779.0 Device Routin Invert Outlet Devices #1 Primary 937.80' 10.0' long x 10.0' breadth Broad - Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max =7.38 cfs 12.20 hrs HW= 938.23' TW= 936.08' (Dynamic Tailwater) 1 =Broad - Crested Rectangular Weir (Weir Controls 7.38 cfs © 1.70 fps) Lg1.70 cfs 7.38 cfs Hydrograph Pond B5: zeiremeeeeme .40 ofdreAcorywd Inflow Area-- 7.3.385 ac Pelt EIev=938 23 Storage38,839 cf Type 11 24-hr 10 -Year Rainfall=4. 20" Printed 11/11/2008 Pa • e 73 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Inflow 0 Primary Carriage House Total Hydrocad i of Type 11 24-hr 10-Year Rainfa11 =4.2O" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 jydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC Pa e 74 Inflow Area = 7.261 ac, 0.00% Impervious, Inflow Depth = 1.09" for 10 -Year event Inflow = 9.00 cfs @ 12.10 hrs, Volume= 0.658 af Outflow = 0.00 cfs a@ 0.00 hrs, Volume= 0.000 af, Atten= 100 %, Lag= 0.0 min Primary _ 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 948.39' © 24.91 hrs Surf.Area= 0.684 ac Storage= 0.658 af Plug -Flow detention time= (not calculated: initial storage excedes outflow) Center -of -Mass det. time= (not calculated: no outflow) Volume Invert Avail.Stora. e Storage Descri•tion #1 947.00' Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area feet acres feet acre -feet acre -feet acres 947.00 0.144 289.0 0.000 0.000 0.144 948.00 0.600 598.0 0.346 0.346 0.645 950.00 1.035 819.0 1.615 1.961 1.218 Device Routin. #1 Primary 0 L 10 :. 0.0 o- 1.961 af Custom Stage Data (Irregular) Listed below Invert Outlet Devices Summary for Pond CITY POND: 949.00' 12.0" x 950.0' long Culvert CMP, end - section conforming to fill, Ke= 0.500 Outlet Invert= 939.00' S= 0.0105 '1' Cc= 0.900 n= 0.012 Primary OutFlow Max =0.00 cfs @ 0.00 hrs 1-1W=947.00' TW = 937.00' (Dynamic Taiiwater) -1= Culvert ( Controls 0.00 cfs) 9.00 cfs Pond CITY POND: Hydrograph I nflow Area7261 ac Peak E1ev948 39 Storage=O 658 af 12.b" x 950.0' Culvert Aret "A" r A grd 'hef° 'A red r cf s reardi MOZAWAINIaraallarale 1 r ei . iffei./. �/. .... . 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Inflow 0 Primary Carriage House Total Hydrocad inf Prepared by FoIz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 Q 2007 H droCAD Software Solutions LLC Summary for Pond EX. CB: [57] Hint: Peaked at 920.78' (Flood elevation advised) Inflow Area = 47.602 ac, 38.84% Impervious, Inflow Depth > 0.75" for 10 -Year event Inflow = 2.26 cfs a@7 12.03 hrs, Volume= 2.994 af Outflow = 2.26 cfs @ 12.04 hrs, Volume= 2.994 af, Atten= 0 %, Lag= 0.6 min Primary = 2.26 cfs @ 12.04 hrs, Volume= 2.994 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 920.78' © 12.04 hrs Type 1124 - hr 14 - Year Rainfall =4.20" Printed 11/11/2008 Pa • e 75 Device Routing_ Invert Outlet Devices #1 Primary 920.03' 15,0" x 171.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 918.00' S= 0.0119 '1' Cc= 0.900 n= 0.012 Concrete pipe, finished Primary OutFlow Max =2.25 cfs © 12.04 hrs HW= 920.78' (Free Discharge) t---1 =Culvert (Inlet Controls 2.25 cfs © 2.94 fps) u) 0 0 4 1 226 c s 2.26 cfs Pond EX. CB: Hydrograph 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Inflow © Primary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HydroCAD© 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Volume Invert Avail.Stora• e Stara. e Descri•tion #1 920.00' Elevation feet 920.00 927.00 928.00 930.00 932.00 934.00 487,005 cf Custom Stage Data Summary for Pond Pond 1: Inflow Area = 46.742 ac, 38.90% Impervious, Inflow Depth > 1.55" for 10 -Year event Inflow = 43.44 cfs @ 12.09 hrs, Volume= 6.022 af Outflow = 2.51 cfs @ 20.12 hrs, Volume= 3.379 af, Atten= 94 %, Lag= 481.6 min Discarded = 0.36 cfs @ 20.12 hrs, Volume= 0.508 af Primary _ 2.15 cfs a[7 20.12 hrs, Volume= 2.870 af Secondary = 0.00 cfs a@ 0.00 hrs, Volume= 0.000 of Routing by Sim-Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Starting Elev= 927.00' Surf.Area= 29,423 sf Storage= 110,877 cf Peak Elev= 930.43' @ 20.12 hrs Surf.Area= 54,075 sf Storage= 266,756 cf (155,879 cf above start) Plug -Flow detention time= 971.5 min calculated for 0.833 af (14% of inflow) Center -of -Mass det. time= 335.9 min ( 1,273.8 - 937.9 ) Irregular) Listed below Surf.Area Perim. Inc.Store Cum.Store Wet.Area s• -ft feet cubic -feet cubic -feet s . -ft 5,442 735.0 0 0 5,442 29,423 1,369.0 110,877 110,877 111,848 43,440 1,434.0 36,205 147,082 126,415 52,160 1,472.0 95,467 242,549 135,670 61,112 1,511.0 113,154 355,703 145,397 70,297 1,632.0 131,302 487,005 175,823 Device Routing Invert Outlet Devices #1 Primary 928.00' 8.0" x 293.0' Tong Culvert RCP, mitered to conform to fill, Ke= 0.700 Outlet Invert= 920.03' S= 0.0272 `1' Cc= 0.900 n= 0.012 #2 Device 1 925.00' 2.50' W x 2.00' H Vert. Orifice /Grate C= 0.600 #3 Device 1 932.80' 48.0" Horiz. Orifice /Grate Limited to weir flow C= 0.600 #4 Secondary 934.00' 15.0' long x 10.0' breadth Broad- Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 #5 Discarded 927.00' 0.600 in/hr Exfiltration over Wetted area above invert Excluded Wetted area = 111,848 sf Discarded OutFlow Max =0.36 cfs © 20.12 hrs HW= 930.43' (Free Discharge) -- 5 =Exfiltration (Exfiltration Controls 0.36 cfs) Primary OutFlow Max =2.15 cfs © 20.12 hrs HW =930.43' TW= 920.76' (Dynamic Taiiwater) t_1 Culvert (Inlet Controls 2.15 cfs @ 6.15 fps) - 2=Orifice/Grate (Passes 2.15 cfs of 37.51 cfs potential flow) - 3 =Orifice /Grate ( Controls 0.00 cfs) Secondary OutFlow Max =0.00 cfs a@ 0.00 hrs HW= 927.00' (Free Discharge) -- 4=Broad- Crested Rectangular Weir ( Controls 0.00 cfs) Type 1124 - hr 1O - Year Rainfall =4.20" Printed 11/11/2008 Page 76 Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HydroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC 30 4 0 — 25.. 0 u- 20..: Pond Pond 1: Hydrograph Inflow Area46J:42 ac Peak E1ev930 43 Storag266 cf / loe f drZAireZe.46:nore401,77.0 0 0, r : Fir � r 0.00 cfs 0;60007110,7, 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Type 11 24-hr 1O -Year Rainfa11 =4. Printed 11/11/2008 Page 77 D Inflow i Outflow D Discarded D Primary D Secondary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC #1 934.00' Elevation feet 934.00 936.00 938.00 Surf.Area 1,721 6,597 15,701 29,442 cf Summary for Pond Pond B7A: Inflow Area = 3.956 ac, 49.27% Impervious, Inflow Depth = 2.50" for 10 -Year event Inflow = 11.63 cfs @ 12.05 hrs, Volume= 0.825 af Outflow = 10.45 cfs @ 12.11 hrs, Volume= 0.646 af, Atten= 10 %, Lag= 3.7 min Primary = 10.45 cfs @ 12.11 hrs, Volume= 0.646 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 936.40' @ 12.11 hrs Surf.Area= 8,113 sf Storage= 10,739 cf Plug -Flow detention time= 146.4 min calculated for 0.646 of (78% of inflow) Center-of-Mass det. time= 58.4 min ( 864.6 - 806.1 ) Volume Invert Avail.Stora•e Stora•e Descri.tion Custom Stage Data (Irregular) Listed below (Recalc) Perim. Inc.Store Cum.Store Wet.Area s + -ft feet cubic -feet cubic -feet (sq -ft) 161.0 0 0 1,721 421.0 7,792 7,792 13,777 815.0 21,650 29,442 52,549 Device Routing Invert Outlet Devices #1 Primary 930.16' 21.0" x 322.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert = 928.00' S= 0.0067? Cc= 0.900 n= 0.013 #2 Device 1 936.00' 48.0 " Horiz. Orifice /Grate Limited to weir flow C= 0.600 Primary OutFlow Max =10.44 cfs @ 12.11 hrs HW= 936.40' TW= 928.17' (Dynamic Tailwater) t--1 Culvert (Passes 10.44 cfs of 19.84 cfs potential flow) �2 =Orifice /Grate (Weir Controls 10.44 cfs @ 2.07 fps) 13 :. 12 10:. 8 7°_° 0 6 5 4 3 2 o 0 - 10.45 cfs Pond Pond B7A: Hydrograph 11,63 cfs Inflow Ar ZeFZeZZZA wrewezd "igeolea wird, Pea • OY= g Type 1124 -hr 10 -Year Rainfall =4.20" Printed 11/11/2008 Pa.e 78 a =3;956 ac SO:r-go-,--i 9 cf.....-- , , , , 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Inflow 0 Primary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Subcatchment GW1: S ubcatchment GW2: S ubcatchment P1: Subcatchment P10: Subcatchment P2: Subcatchment P3: Subcatchment P4: Subcatchment P5: Subcatchment P6: Subcatchment P7: Subcatchment P7A: Subcatchment P9: Pond B1: Pond B2: Pond B3: Pond 84: Pond B5: Pond CITY POND: Pond EX. CB: Pond Pond 1: Time span= 0.00 -30.00 hrs, dt =0.01 hrs, 3001 points Runoff by SCS TR -20 method, UH=SCS Reach routing by Sim -Route method - Pond routing by Sim -Route method Type 1124 100 - Year Rainfa11 =5.99" Printed 11/11/2008 Pa.e 79 Runoff Area = 92.429 sf 87.87% Impervious Runoff Depth= 5.20" Flow Length =250' Tc =6.8 min CN =94 Runoff =16.92 cfs 0.919 of Runoff Area = 37.462 sf 35.82% Impervious Runoff Depth = 3.10" Flow Length =280' Slope = 0.0200 'i' Tc =10.6 min CN =74 Runoff =4.02 cfs 0.222 of Runoff Area = 120.067 sf 0.00% Impervious Runoff Depth = 2.37" Flow Length =207' Slope= 0.0200 'i' Tc =9.5 min CN =66 Runoff =10.22 cfs 0.544 of Runoff Area= 310.366 sf 21.52% Impervious Runoff Depth = 2.45" Flow Length =690' Slope= 0.0250'1' Tc =21.6 min CN =67 Runoff =18.28 cfs 1.458 of Runoff Area = 545.736 sf 0.00% Impervious Runoff Depth= 1.69" Flow Length = 1.421 Tc =34.2 min CN =58 Runoff =15.13 cfs 1.769 of Runoff Area= 271.794 sf 36.51% Impervious Runoff Depth = 3.01 " Flow Length =892' Tc =14.5 min CN =73 Runoff =24.75 cfs 1.563 of Runoff Area = 104.685 sf 55.32% Impervious Runoff Depth = 3.79" Flow Length=250' Tc =10.1 min CN =81 Runoff =13.78 cfs 0.760 af Runoff Area = 266.734 sf 56.79% Impervious Runoff Depth= 3.90" Flow Length =250' Tc =10.8 min CN =82 Runoff =35.04 cfs 1.988 of Runoff Area = 501.430 sf 49.95% Impervious Runoff Depth= 3.59" Flow Length -755' Tc =18.6 min CN =79 Runoff =47.80 cfs 3.444 of Runoff Area = 87.012 sf 90.00% Impervious Runoff Depth = 5.20" Flow Length =370' Tc=12.6 min CN =94 Runoff =13.24 cfs 0.865 of Runoff Area = 85.313 sf 7.73% Impervious Runoff Depth = 2,73" Flow Length =774' Tc =19.9 min CN=70 Runoff =5.92 cfs 0.445 of Runoff Area= 316.304 sf 0.00% Impervious Runoff Depth = 2.19" Flow Length =401' Slope= 0.0350'1' Tc =16.1 min CN =64 Runoff =19.47 cfs 1.327 af Peak EIev= 941.35' Storage =2.313 af Inflow =16.91 cfs 2,313 af 18.0" x 80.0' Culvert outflow =0.00 cfs 0.000 of Peak EIev= 937.74' Storage = 113.327 cf Inflow =54.70 cfs 5.516 af 15.0" x 879.0` Culvert Outflow =6.01 cfs 5.084 of Peak EIev= 941.87' Storage = 19.743 cf Inflow =18.28 cfs 1.458 af Primary=4.71 cfs 1.451 af Secondary=0.00 cfs 0.000 af Outflow =4.71 cfs 1.451 af Peak EIev = 938.91' Storage =5,431 cf Inflow =27.91 cfs 3.014 af Outflow =27.08 cfs 3.001 of Peak EIev= 938.59' Storage =48,783 cf Inflow =35.04 cfs 2.060 af Outflow =18.98 cfs 1.756 af Peak EIev = 949.18' Storage =1.299 af Inflow =19.47 cfs 1.327 af 12.0" x 950.0' Culvert Outflow =0.14 cfs 0.073 of Peak EIev = 921.30' Inflow =4.74 cfs 3.816 af 15.0" x 171.0' Culvert Outflow =4.74 cfs 3.816 af Peak EIev = 932.94' Storage = 417.573 cf Inflow =73.79 cfs 10.578 af Discarded =0.67 cfs 0.850 af Primary =2.50 cfs 3.596 af Secondary=0.00 cfs 0.000 af Outflow =3.17 cfs 4.445 af Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC Type 1124 -hr 100-Year Rainfall =5.90" Printed 11/11/2008 Page 80 Pond Pond B7A: Peak EIev= 936.56' Storage= 12,049 cf Inflow =18.18 cfs 1.310 af Outflow =17.08 cfs 1.131 af Total Runoff Area = 62.886 ac Runoff Volume = 15.303 af Average Runoff Depth = 2.92" 70.60% Pervious = 44.396 ac 29.40% Impervious = 18.491 ac Carriage House Total Hydrocad inf Type 1124 -hr 100 -Year Rainfall =5.90" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/1112008 HydroCAD® 8.50 sin 002112 fl 2007 HydroCAD Software Solutions LLC Page 81 Runoff = 16.92 cfs @ 11.98 hrs, Volume= Summary for Subcatchment GWI: Area sf CN Descri . tion 11,211 61 >75% Grass cover, Good, HSG B 81,218 98 Paved parking & roofs 0.919 af, Depth= 5.20" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 11 24 -hr 100 -Year Rainfall= 5.90" Tc Length Slope Velocity Capacity Description min feet ftlft ftlsec cfs 6.1 50 0.0200 0.14 Sheet Flow, Grass: Short n= 0.150 P2= 2.75" 0.7 200 0.0600 4.97 Shallow Concentrated Flow, Paved Kv= 20.3 f• s 6.8 18 17 16' 15 14- 13 • 12 11 10- g 9 i 7 5 4-: 3 92,429 94 Weighted Average 11,211 Pervious Area 81,218 Impervious Area 250 Total Subcatchment GW1 Hydrograph 16.92 cfs 1 0 0 z/e4 zoo #.674:4; ird eza reo eid I 1 0 Type It 24 -hr 100 -Year RainfaH=5 90 Runoff Area =92,429 sf Runoff Volume=0 919 of Runoff Depth=5 20" Flow Length=250 Tc6 8 min 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Runoff = 4.02 cfs a@ 12.02 hrs, Volume= Runoff by SCS TR -20 method, UH -SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 1124-hr 100 -Year Rainfall=5.90" Area sf CN Descri tiara 24,044 61 >75% Grass cover, Good, HSG B 13,418 98 Paved . arkin . & roofs 37,462 24,044 13,418 74 Weighted Average Pervious Area Impervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs Summary for Subcatchment 0W2: 0.222 af, Depth= 3.10" 8.8 50 0.0200 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 1.8 230 0.0200 2.12 Shallow Concentrated Flow, Grassed Waterwa Kv= 15.0 f • s 10.6 280 Total 0 0 Subcatchment GW2: Hydrograph Type 1124 - hr 100 - Year Rainfall =5.94" Printed 11/11/2008 Pa.e 82 4.02 cfs i/ 110 g d 0 J0, P r�aieiiiii iiiii.�.rii Type II 24-hr 100 -Year RainfaII5.90" Runoff Area37,462 sf Runoff VoIumeO222: of .Runoff Depth3 10" Flow L SIopeO 0200 '/' Tc10 6 min CN74 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Prepared by Foiz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Runoff 10.22 cfs @ 12.02 hrs, Volume= Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type I124-hr 100 -Year Rainfall =5.90" 120,067 66 0 11 10 Area sf CN Descri flan 120,067 Pervious Area Summary for Subcatchment P1: Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.5 207 0.0200 0.36 L.ag1CN Method, 4.544 af, Depth= 2.37" Subcatchment P1: Hydrograph Type 1124 - hr 100 - Year Rainfall 5.94" Printed 1111112008 Pa 83 [ 10.22 cfs 0 oT/4 FF.A-ezzi.wzyz../7,-,./-400-dFrdzgrA • • irn firez'' 4- f i Type 1124-hr 100 -Year Rainfall=5 90" Runoff Areal2O,067 sf Runoff Volume01544 of Runoff Depth=2 37 flow Length -207` SIopeO 0200 '1' Tc9 5 min CN66 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) ❑ Runoff Carriage House Total Hydrocad inf Prepared by Falz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Runoff = 18.28 cfs a@ 12.15 hrs, Volume= Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 1124-hr 100 -Year Rainfall =5.90" Area sf CN Description 243,573 58 53,145 98 13,648 100 310,366 243,573 66,793 Tc Length min feet 21.6 20 19 18 17� 15' j. 14 :1 13 . 12 11 1o r: 0 9• � 7 690 0.0250 0 Meadow, non- grazed, HSG B Paved parking & roofs Pond 67 Weighted Average Pervious Area Impervious Area Slope Velocity Capacity ft/ft ft/sec cfs 0.53 Summary for Subcatchment P10: Description Lag/CN Method, Subcatchment P10: 18.28 cfs Hydrograph 1.458 af, Depth= 2.45" far arnfall= 5, °' RunoffArea310,366 sf ype Type 1124 -hr 100 -Year Rainfall =5.9" Printed 11/11/2008 Pa 84 Runoff VoIumel 458 of unoff Dept f low Lengt S1ope00250 Tc2t6 min 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HydroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Summary for Subcatchment P2: Runoff = 15.13 cfs © 12.34 hrs, Volume= 1.769 af, Depth= 1.69" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type I124-hr 100 -Year Rainfall= 5.90" Area sf CN Descri Lion 545 736 58 Meadow non -. razed HSG B Tc Length min feet ft/ft ft/sec cfs 7.5 50 0.0300 0.11 26.7 1,371 0.0150 0.86 34.2 1,421 Total 16 15 14 13. 12 11 10' 0 0 8 5 3 545,736 Pervious Area Slope Velocity Capacity Description Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f 15.13 cfs Subcatchment P2: Hydrograph „r0; • oF Ao Poo 4 , 0 7,„ ffigs gio Type 1124 -hr 100 -Year Rainfall =5.90” Printed 11/11/2008 Page 85 Type II 24hr1OOYar RainfaIIS 90" Runoff Area = 545,736 sf Runoff Volume=1 769 of unoff Dept 69" Flow Length=1,421 ..-. min 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Runoff = 24.75 cfs a@ 12.07 hrs, Volume= Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 1124-hr 100 -Year Rainfall=5.90" Tc Length Slope Velocity Capacity Description min feet ft/ft itlsec cfs 9 3 100 0.0700 0.18 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 2.4 144 0.0200 0.99 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 2.1 365 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps 0.7 283 0.0200 6.95 5.46 Circular Channel (pipe), Diam= 12.0" Area= 0.8 sf Perim 3.1' 14.5 26 24 22 20 .:;. 18• 14- : 0 12.: 10 8 6 4 2_.^_ 0 Area sf CN Descri tion 85,649 98 Paved parking & roofs 11,784 98 Building 172,551 58 Meadow, non - grazed, HSG B 1 810 100 Pond 271,794 172,551 99,243 892 Total 73 Weighted Average Pervious Area Impervious Area 24.75 cfs Summary for Subcatchment P3: 1.563 af, Depth= 3.01" Subcatchment P3: Hydrograph Type 1124 - hr 100 - Year Rainfall= 5.90" Printed 11/11/2008 Pa 86 0.25' 0.012 10 101 Foe #0,0 0 iiiie l ei. � iei ��� ,viii. � ii �iiiii�i�i i Type 11 24-hr 100-Year ainfall 5. Runoff Area271,794 sf Runoff VoIumel 563 of Runoff Depth3 O1 Flow Length=892 c min =73 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Runoff = 13.78 cfs a@ 12.02 hrs, Volume= Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type I124-hr 100 -Year Rainfall= 5.90" Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description min feet ftift ft/sec cfs 6.7 50 0.0400 0.12 Sheet Flow, 0 2 L Area sf CN Description 46,778 58 14,532 98 2,500 98 40 875 99 104,685 81 46,778 57,907 3.4 200 0.0200 0.99 10.1 250 Total Woods /grass comb., Good, HSG B Building Paved parking & roofs Pond Weighted Average Pervious Area Impervious Area Summary for Subcatchment P4: 13.78 cfs Hydrograph 0.760 af, Depth= 3.79" Grass: Dense n= 0.240 P2= 2.75" Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f• Type 1124 - hr 100 - Year Rarnfa11 =5.99" Printed 11/11/2008 Pa •e 87 Subcatchment P4: • r - i O Ap, zezezdoza we wee 2s4 rezp - 0 1 0,1 5 ") 74 e://of pme, Type It 24 -hr 100 -Year RainfaU=5 9O" u noff Area = 104,685 s Runoff Volume=O 760 of Runoff Depth=3 79" Flow Length25O' Tc=iO 1 min CN=81 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC Runoff = 35.04 cfs @ 12.02 hrs, Volume= Tc Length min feet 8.8 2.0 10.8 38 36 34 32. 36 28 26 24 22 0 .v.. 20 2 18 -. 16 14• 12 10 Area sf 8 6 2 32,966 58 Woods /grass comb., Good, HSG B 141,646 98 Paved parking & roofs 9,837 99 Water 82 285 61 X75% Grass cover Good HSG B 266,734 115,251 151,483 50 0.0200 200 0.0550 250 Total CN Description 82 Weighted Average Pervious Area Impervious Area Slope Velocity Capacity ft/ft ft/sec cfs Summary for Subcatchment P5: Description 35.04 cfs Hydrograph 9 10 11 12 13 14 15 16 17 18 Time (hours) 1.988 af, Depth= 3.94" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 -Year Rainfall= 5.90" 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 1.64 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f Subcatchment P5: IP I d I 11 0 o °1 0 • ;fir, i ell 2,4 -hr ear RainfaII5 90 Runoff Area266,734 s Runoff VoIumel 98 of Runoff Depth3 90'' FI�w Length25O T c10 8 min CN Type 11 24-hr 100 -Year Rainfall =5.99" Printed 11/11/2008 Page 88 9 20 21 22 23 24 25 26 27 28 29 30 Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Runoff - 47.80 cfs a©7 12.11 hrs, Volume= Area sf CN Descri #ion 211,691 98 Paved roads w /curbs & sewers 177,722 61 >75% Grass cover, Good, HSG B 38,796 100 Pond 73 221 60 Meadow, non - grazed HSG B 501,430 250,943 250,487 79 Weighted Average Pervious Area Impervious Area Tc Length min feet ft/ft ft/sec cfs 6.7 50 0.0400 0.12 11.9 705 0.0200 0.99 18.6 755 Total 50 45 40 35 ,) 30 v 2 IL 2 0 15' 10 Slope Velocity Capacity Description Summary for Subcatchment P6: 3.444 af, Depth= 3.59" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type I124-hr 100 -Year Rainfall =5.90" Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f•s Type 1124 - hr 100 - Year Rainfall =5.90" Printed 11/11/2008 Pa •e 89 O / f0 ror ' F 4:07; 47.80 cfs Subcatchment P6: Hydrograph Type If 24hr1OOY RainfaH=5.90'° Runoff Area=501 ,430 sf Runoff Volume=3 444 af Runoff Depth3 59fl Flow Length=755' Tc=18 6 min CN=79 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) ❑ Runoff Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Runoff = 13.24 cfs a@ 12.04 hrs, Volume= Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 1124-hr 100 -Year Rainfall= 5.90" Area sf CN Descri tion 78,311 98 Paved parking & roofs 8,701 61 >75% Grass cover, Good, HSG B 87,012 94 Weighted Average 8,701 Pervious Area 78,311 Impervious Area 12.6 14 13. 12 11 10 9 =: ® 7.. 5 2 1 0 0 370 Total Slope Velocity Capacity Tc Length min feet ft/ft ftlsec cfs ............................ . 8.8 50 0.0200 0.09 3.8 320 0.0400 1.40 Summary for Subcatchment P7: Description 0.865 af, Depth= 5.20" Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f Type 11 24 - hr 100 - Year Rainfall =5.90" Printed 11/11/2008 Pa • a 90 Hydrogra ph 13.24 cfs Subcatchment P7: 10 0 . iii., �r �i�iiirIiiiiiiii.�ji iisiiiii�ii��isriieii ,�.ri.�ii ��.�ii.�iiiiiiiiiiii e 11 244ir 100 -Year Rainfalfr5 9O`° Runoff Area87,012 sf Runoff VoIumeO 865 of Runoff Depth -5.20 FI�w Length -370° Tc=12 6 min =94 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad i of Prepared by Folz, Freeman, Erickson, Inc. H drocAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Runoff = 5.92 cfs © 12.13 hrs, Volume= Runoff by SCS TR -20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type 1124-hr 100 -Year Rainfall- 5.90" Area sf CN Descri tion 20,196 85 Gravel roads, HSG B 58,520 61 >75% Grass cover, Good, HSG B 6,597 100 Pond 85,313 78,716 6,597 70 Weighted Average Pervious Area Impervious Area Tc Length Slope Velocity Capacity min feet ftlft ftlsec cfs 10.0 100 0.0590 0.17 1.7 173 0.0590 1.70 6.7 251 0.0080 0.63 1.5 250 0.0360 2.85 19.9 774 Total 0 Summary for Subcatchment P7A: Description Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps Shallow Concentrated Flow Grassed Waterwa Kv= 15.0 f 5.92 cfs Subcatchment P7A: Hydrograph 0.445 af, Depth= 2.73" Type. If, 24 -hr 100 -Year Rainfall=5 9O ':' Runoff Area85,313 sf Runoff; Volume=O 445 af Runoff Depth2 73V FI�w Length =774' T c19 9 min N =70 Type 1124 -hr 100-Year Rainfall =5.99" Printed 11/1112008 Pare 91 ,, 0 .. .. .. ... �. .. ff � 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Runoff Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Summary for Subcatchment P9: Runoff = 19.47 cfs a@ 12.09 hrs, Volume= 1.327 af, Depth= 2.19" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Type 11 24 -hr 100 -Year Rainfall= 5.90" Area (sf) CN Description 316 304 64 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.3 100 0.0350 0.14 3.8 16.1 21 20 19 18 17. 16 15 14 .7 13 L. 12-=``` 11 2 10: 9 8 . 7 .� 6 5 4 2•• 1 0 0 316,304 Pervious Area 301 0.0350 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" 1.31 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 f 401 Total 9 10 19.47 cfs Subcatchment P9: Hydrograph Type 1124 - hr 100 - Year Rainfall =5.90" Printed 11/11/2008 Pa •e 92 i 0 0 i Type II 24 -hr 100 Year RainfaII5 90H Runoff Area316,304 sf Runoff Volumel 327 of Runoff Depth2 19 Flow Length4QV SopeO 0350 I' Tc16 1 min e..40,~„ m,ozo ormff (ex, "Jed 1 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad inf Prepared by FoIz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Inflow Area = Inflow Outflow Primary Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 941.35' @ 25.93 hrs Surf.Area= 0.781 ac Storage= 2.313 af Plug -Flow detention time= (not calculated: initial storage excedes outflow) Center -of -Mass det. time= (not calculated: no outflow) Volume Invert Avail.Stora• e Stora• e Descri tion #1 938.00' 6.623 af Custom Stage Data (Irregular) Listed below Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area feet acres feet acre -feet acre-feet acres 938.00 0.590 600.0 0.000 0.000 0.590 940.00 0.700 652.0 1.288 1.288 0.712 942.00 0.820 703.0 1.518 2.807 0.842 944.00 0.950 759.0 1.768 4.575 0.996 946.00 1.100 816.0 2.048 6.623 1.164 Device Routine #1 Primary Primary OutFlow Max =0.00 cfs @ 0.00 hrs HW=938.00' (Free Discharge) 'I =culvert ( Controls 0.00 cfs) 18 17: 16. 15 14: 13 12' n 11: 10. 0 0.00 cfs -4 8 7 5 4 3 2 15.285 ac, 0.00% Impervious, Inflow Depth = 1.82" for 100 -Year event 16.91 cfs © 12.31 hrs, Volume= 2.313 af 0.00 cfs © 0.00 hrs, Volume= 0.000 af, Atten= 100 %, Lag= 0.0 min 0.00 cfs 0.00 hrs, Volume= 0.000 af Invert Outlet Devices 942.00' 18.0" x 80.0' long Culvert CMP, end - section conforming to fill, Ke= 0.500 Outlet Invert= 941.00' S= 0.0125 '1' Cc= 0.900 n= 0.012 Summary for Pond Bl Hydrograph 6.91 cfs Pond (3'I Inflow Area=15P285 ac eak Elev=941 35 Storage-2.313 af IV Type 1124 -hr 100 -Year Rainfall=5.90" Printed 11/1112008 Pa 93 'Culvert 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Inflow 0 Primary Carriage House Total Hydrocad inf Type 1124 -hr 100 -Year Rainfall =5.90" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 H droCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Pa 994_ Inflow Area = 29.153 ac, 29.56% Impervious, Inflow Depth > 2.27" for 100 -Year event Inflow = 54.70 cfs © 12.09 hrs, Volume= 5.516 of Outflow = 6.01 cfs © 12.46 hrs, Volume= 5.084 af, Atten= 89 %, Lag= 22.4 min Primary = 6.01 cfs © 12.46 hrs, Volume= 5.084 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 937.74' @ 14.62 hrs Surf.Area= 57,372 sf Storage= 113,327 cf Plug -Flow detention time= 269.5 min calculated for 5.084 af (92% of inflow) Center -of -Mass det. time 224.8 min ( 1,093.8 - 869.0 ) Volume Invert Avail.Stora• e Stora■ e Descri•tion #1 935.50` Elevation feet 935.50 936.00 938.00 940.00 Device Routing_ #1 Primary P rimary OutFlow Max =6.02 cfs @ 12.46 hrs HW= 937.16' TW= 930.14' (Dynamic Tailwater) 1 =Culvert (Inlet Controls 6.02 cfs @ 4.90 fps) 60 55 50 4 5 40 N 35• . 0 30• v 25 20 . 15 10 5 0 0 Summary for Pond B2: 254,384 cf Custom Stage Data (Irregular) Listed below Surf.Area Perim. s . -ft feet 44,056 847.0 45,780 844.0 59,126 955.0 68,288 1,064.0 Inc.Store Cum.Store cubic -feet cubic -feet 0 0 22,458 22,458 104,622 1 27,079 127,304 254,384 Invert Outlet Devices 935.50' 15.0" x 879.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 928.00' S= 0.0085 '1' Cc= 0.900 n= 0.012 601 cfs Hydrograph 4. es. 'dr ,yme~ „49 de; I" ziwzdrze drezrArzzdereer 54.70 cfs Pond B2: Wet.Area s• -ft 44,056 44,641 60,633 78,261 Inflo.w . .. Area29ai ... 53 ac Peek EIev=937 74 Storaje113,327 cf x 879.0' Culvert 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Inflow 0 Primary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HydroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Inflow Area Inflow = Outflow = Primary = Secondary = Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 941.87' @ 12.61 hrs Surf.Area= 22,433 sf Storage= 19,743 cf Plug -Flow detention time= 39.6 min calculated for 1.451 of (100% of inflow) Center -of -Mass det. time= 36.7 min ( 894.1 - 857.4 ) Volume Invert Avail.Stora ■ e Storar e Descri•tion #1 938.00' Elevation feet 938.00 940.00 942.00 944.00 Device Routing #1 Primary #2 Secondary 7.125 ac, 21.52% Impervious, Inflow Depth = 2.45" for 100 -Year event 18.28 cfs @ 12.15 hrs, Volume= 1.458 of 4.71 cfs @ 12.61 hrs, Volume= 1.451 af, Atten= 74 %, Lag= 27.1 min 4.71 cfs © 12.61 hrs, Volume= 1.451 af 0.00 cfs @ 0.00 hrs, Volume= 0.000 af S u rf.Area Perim. s . -ft feet 500 100.0 897 135.0 23,920 1,226.0 53,751 1,434.0 Invert 938.42' 943.70' Summary for Pond B3: 96,696 cf Custom Stage Data (Irregular) Listed below Inc,Store Cum.Store cubic -feet cubic-feet 0 0 1,378 1,378 19,633 21,011 75,685 96,696 Outlet Devices 12.0" x 120.0' long Culvert RCP, end - section conforming to fill, Outlet Invert= 938.24' S= 0.0015 '1' Cc= 0.900 n= 0.012 100.0' long x 20.0' breadth Broad - Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max =4.71 cfs c 12.61 hrs HW= 941.87' TW= 938.37' (Dynamic Tailwater) 1 =Culvert (Barrel Controls 4.71 cfs J 6.00 fps) Secondary OutFlow Max =0.00 cfs © 0.00 hrs HW= 938.00' TW= 935.50' (Dynamic Tailwater) t---2 =Broad - Crested Rectangular Weir ( Controls 0.00 cfs) Type 1124 - hr 100 - Year Rainfall =5.90" Printed 11/11/2008 Page 95 Wet.Area s• -ft 500 1,195 119,364 163,473 Ke= 0.500 Carriage House Total Hydrocad inf Type 1124 -hr TOO -Year Rainfa11 =5.9O" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 H dr 8. sln 00 2112 © 200 H droCAD Software Solutions LLC Pa e 96 Hydrograph 4,71 c 4.71 cfs Pond B3: 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 117#17471~0". i � �:-../ � �; . .�"; 1 :.;,M.�Y . J'- ';�./.- �'Y��: �. ;. "f'�i"�, r::� j':�Vf'.a .�r�y'r.- ✓ e rr . 0 0 cfs . rte 0 Inflow Li Outflow 0 Primary D Secondary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. H droCAD® 8.50 sin 002112 © 2007 H droCAD Software Solutions LLC Inflow Area = 13.365 ac, 28.52% Impervious, Inflow Depth = 2.71" for 100 -Year event Inflow = 27.91 cfs @ 12.07 hrs, Volume= 3.014 af Outflow = 27.08 cfs © 12.11 hrs, Volume= 3.001 af, Atten= 3 %, Lag= 2.2 min Primary = 27.08 cfs © 12.11 hrs, Volume= 3.001 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 938.91' @ 12.11 hrs Surf.Area= 5,037 sf Storage= 5,431 cf Plug -Flow detention time= 8.5 min calculated for 3.001 of (100% of inflow) Center -of -Mass det. time= 5.9 min ( 870.2 - 864.3 ) Volume Invert Avail.Stora• a Stora• e Descri .tion #1 937.70' 11,008 cf Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet (sq -ft) (feet) (cubic -feet) (cubic -feet) (sq -ft) 937.70 1,878 182.0 0 0 1,878 938.00 3,572 243.0 804 804 3,942 940.00 6,804 403.0 10,204 11,008 12,192 Device Routin Invert Outlet Devices #1 Primary 937.90' 10.0' long x 10.0' breadth Broad- Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max =27.06 cfs © 12.11 hrs HW= 938.91' TW= 936.41' (Dynamic Taiiwater) 1=Broad- Crested Rectangular Weir (Weir Controls 27.06 cfs @ 2.69 fps) 1 00 1 00 100 i% 0 A • rx.w," dA 7- iedys- Amm r x 0.rof el° 7 5. 4 ' 01 " 4 , ) , 2 , zik de zdreraseze.#7 Summary for Pond B4: Custom Stage Data (Irregular) Listed below Hydrograph Pond B4: 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Type 1124 -hr 100-Year Rainfa11=5.90" Printed 11/11/2008 Pa • e 97 Inflow 0 Primary Carriage House Total Hydrocad inf Prepared by Falz, Freeman, Erickson, Inc. H droCAD® 8.50 s/n 002112 © 2007 H droCAD Software Solutions LLC Inflow Area Inflow Outflow = Primary = Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Starting Elev= 937.00' Surf.Area= 16,501 sf Storage= 16,179 cf Peak EIev= 938.59' © 12.14 hrs Surf.Area= 25,542 sf Storage= 48,783 cf (32,604 cf above start) Plug - Flow detention time 223.8 min calculated for 1.384 of (67% of inflow) Center --of -Mass det. time 55.3 min ( 891.2 - 835.9 ) Volume Invert Avail.Storage Storage Description #1 Elevation feet 936.00 938.00 940.00 38= 36-: 34 32 30 2 8- 26 24 ,( 22 0 --. 20 0 18 16_ 14 12 10 8 936.00' Device Routing #1 Primary 13.385 ac, 25.98% Impervious, Inflow Depth > 1.85" for 100 -Year event 35.04 cfs a@ 12.02 hrs, Volume= 2.064 of 18.98 cfs a@ 12.14 hrs, Volume= 1.756 af, Atten= 46 %, Lag= 7.2 min 18.98 cfs a@ 12.14 hrs, Volume= 1.756 of Surf.Area s -ft 10,936 22,066 33,801 Invert 937.80' 87,809 cf Perim. feet 483.0 624.0 779.0 Custom Stage Data (Irregular) Listed below Outlet Devices 10.0' long x 10.0' breadth Broad- Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max =18.97 cfs a@7 12.14 hrs HW = 938.59' TW= 936.53' (Dynamic Tailwater) --- 11jBroad- Crested Rectangular Weir (Weir Controls 18.97 cfs a@ 2.39 fps) r f /j / F'• . / 0 1 1 : 44 4 07z zfie IfJ / 'fJ ;; d orm 002 more rozde � � -mire Ivo .0", rzy Summary for Pond B5: Inc.Store Cum.Store cubic -feet cubic -feet 0 0 32,358 32,358 55,452 87,809 35.04 cfs Hydrograph Pond B5: Inflow Peak El Stora e=48, r Wet.Area s + -ft 10,936 23,406 40,768 Type 1/ 24 - hr 100 - Year Rainfall =5.99" Printed 11/11/2008 Pa w e 98 cf 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Carriage House Total Hydrocad inf Type 1124 -hr 100 -Year Rainfall =5.90" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/1 1/2008 HydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC Page 99 Inflow Area = 7.261 ac, 0.00% Impervious, Inflow Depth = 2.19" for 100 -Year event Inflow = 19.47 cfs @ 12.09 hrs, Volume= 1.327 of Outflow = 0.14 cfs @ 24.26 hrs, Volume= 0.073 af, Atten= 99 %, Lag= 729.9 min Primary = 0.14 cfs @ 24.26 hrs, Volume= 0.073 af Summary for Pond CITY POND: Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 949.18' c 24.26 hrs Surf.Area= 0.857 ac Storage= 1.299 af Plug -Flow detention time= 819.4 min calculated for 0.073 of (5% of inflow) Center-of-Mass det. time= 658.8 min ( 1,518.4 - 859.6 ) Volume Invert Avail.Stora■ a Stara • e Descri. tion #1 947.00' 1.961 af Custom Stage Data (Irregular) Listed below Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (acres) (feet) (acre-feet) (acre -feet) (acres) 947.00 0.144 289.0 0.000 0.000 0.144 948.00 0.600 598.0 0.346 0.346 0.645 950.00 1.035 819.0 1.615 1.961 1.218 Device Routine Invert Outlet Devices #1 Primary 949.00' 12.0" x 950.0' long Culvert CMP, end - section conforming to fill, Outlet Invert= 939.00' S= 0.0105 '1' Cc= 0.900 n= 0.012 Primary OutFlow Max =0.14 cfs @ 24.26 hrs HW= 949.18' TW= 937.87' (Dynamic Tailwater) 'I =Culvert (Inlet Controls 0.14 cfs @ 1.44 fps) 21 20 19% 18 17. 16• 15 . 14 13 1 11 - 0 10-; u 9 7 3 r eir„ 50 " orre40.- 441. �� _ 0.14 / C f 5 /// .. Z 1 -•.! __:w -_ -Jf J / /// I Pond CITY POND: Hydrograph 19.47 cfs 1 r fl ow Areal` Ie torag Ke= 0.500 ac af vert 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Inflow D Primary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HydroCAD® 8.50 sin 002112 © 2007 HydroCAD Software Solutions LLC [57] Hint: Peaked at 921.30' (Flood elevation advised) Summary for Pond EX. CB: Inflow Area = 47.602 ac, 38.84% Impervious, Inflow Depth > 0.96" for 100 -Year event Inflow = 4.74 cfs @ 12.04 hrs, Volume= 3.816 af Outflow = 4.74 cfs @ 12.05 hrs, Volume= 3.816 af, Atten = 0 %, Lag= 0.6 min Primary = 4.74 cfs © 12.05 hrs, Volume= 3.816 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt- 0.01 hrs Peak F Iev= 921.30' @ 12.05 hrs Device Routing Invert Outlet Devices #1 Primary 920.03' 15.0" x 171.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 918.00' S= 0.0119 '1' Cc= 0.900 n= 0.012 Concrete pipe, finished Primary OutFlow Max =4.74 cfs @ 12.05 hrs HW= 921.30' (Free Discharge) 1=Culvert (Inlet Controls 4.74 cfs @ 3.86 fps) 5 l4.74cs 4.74 cfs Pond EX. CB: Hydrograph 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Type 1124 -hr 100-Year Rainfall =5.90" Printed 11/11/2008 Page 100 e AeeoeZeZerdMP:Ze Kitemorziorz- OP Inflow Area476O2 ac Peak E1ev921 3O " x 171.0' Culvert El Inflow 0 Primary Carriage House Total Hydrocad inf Type 1124 -hr 100 -Year Rainfall= 5.90" Prepared by Folz, Freeman, Erickson, Inc. Printed 11/11/2008 HydroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Page 101 Volume Invert Avaii.Stora-- e Stora• e Descri .tion #1 920.00' Elevation (feet) 920.00 927.00 928.00 930.00 932.00 934.00 487,005 cf Summary for Pond Pond '1: Inflow Area = 46.742 ac, 38.90% Impervious, Inflow Depth > 2.72" for 100 -Year event Inflow = 73.79 cfs a@ 12.09 hrs, Volume= 10.578 af Outflow = 3.17 cfs © 24.18 hrs, Volume= 4.445 af, Atten= 96 %, Lag= 725.3 min Discarded = 0.67 cfs c 24.03 hrs, Volume= 0.850 af Primary = 2.50 cfs © 24.23 hrs, Volume= 3.596 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Starting Elev= 927.00' Surf.Area= 29,423 sf Storage= 110,877 cf Peak Elev= 932.94' © 24.03 hrs Surf.Area= 65,440 sf Storage= 417,573 cf (306,696 cf above start) Plug -Flow detention time 887.5 min calculated for 1.900 af (18% of inflow) Center -of -Mass det. time= 323.6 min ( 1,274.9 - 951.3 ) Custom Stage Data Irregular) Listed below Surf.Area Perim. Inc.Store Cum.Store s -ft feet (cubic -feet) (cubic -feet) 5,442 735.0 0 0 29,423 1,369.0 110,877 110,877 43,440 1,434.0 36,205 147,082 52,160 1,472.0 95,467 242,549 61,112 1,511.0 113,154 355,703 70,297 1,632.0 131,302 487,005 Device Routing Invert Outlet Devices #1 Primary 928.00' 8.9" x 293M' long Culvert RCP, mitered to conform to fill, Ke= 0.700 Outlet Invert= 920.03' S= 0.0272 '1' Cc= 0.900 n= 0.012 #2 Device 1 925.00' 2.50' W x 2.00' H Vert. Orifice /Grate C= 0.600 #3 Device 1 932.80' 48.0" Horiz. Orifice /Grate Limited to weir flow C= 0.600 #4 Secondary 934.00' 15.0' long x 10.0' breadth Broad- Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 #5 Discarded 927.00' 0.609 in/hr Exfiltration over Wetted area above invert Excluded Wetted area = 111,848 sf Discarded OutFlow Max =0.67 cfs @ 24.03 hrs HW =932.94' (Free Discharge) '- 5 =Exfiltration (Exfltration Controls 0.67 cfs) Primary OutFlow Max =2.50 cfs a@ 24.23 hrs HW =932.94' TW= 920.83' (Dynamic Tailwater) 1 Culvert (Outlet Controls 2.50 cfs © 7.17 fps) T ii 2Orifice/Grate (Passes < 53.51 cfs potential flow) 34Orifice /Grate (Passes < 2.16 cfs potential flow) Secondary OutFlow Max =0.00 cfs @ 0.00 hrs HW= 927.00' (Free Discharge) -- 44Broad- Crested Rectangular Weir ( Controls 0.00 cfs) Wet.Area (sq -ft) 5,442 111,848 126,415 135,670 145,397 175,823 Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HvdroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC 80• 75 70-: 65 60. 55 Pond Pond 1: Hydrograph nfiow Area46 742 ac 4 ` totage4l7,573 cf Peak EIev=9 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Type 1124 -hr 100 -Year Rainfa11 =5.90" Printed 11/11/2008 Page 102 50 N 0 45 a 40 :. u. 35 30 25 20 .: 3.17 cfs .:� fir: .r f .r. r ; r:. ; �•;...: Sr• .�.- f f ,:f . �.N. • � .-. n -r 15 _ , . ; ;: ;;. }, r ,. remzemma 1 �'] _ .; ,s 2.50 cfs 10 W4 /err 0.00 cfsrd . .me, y El Inflow : outflow El Discarded 0 Primary O Secondary Carriage House Total Hydrocad inf Prepared by Folz, Freeman, Erickson, Inc. HydroCAD® 8.50 s/n 002112 © 2007 HydroCAD Software Solutions LLC Summary for Pond Pond B7A: Inflow Area = 3.956 ac, 49.27% Impervious, Inflow Depth = 3.97" for 100 -Year event Inflow = 18.18 cfs @ 12.05 hrs, Volume= 1.310 af Outflow = 17.08 cfs a@ 12.10 hrs, Volume= 1.131 af, Atten= 6 %, Lag= 3.0 min Primary - 17.08 cfs © 12.10 hrs, Volume= 1.131 af Routing by Sim -Route method, Time Span= 0.00 -30.00 hrs, dt= 0.01 hrs Peak Elev= 936.56' © 12.10 hrs Surf.Area= 8,742 sf Storage= 12,049 cf Plug -Flow detention time= 111.0 min calculated for 1.131 af (86% of inflow) Center-of-Mass det. time= 45.6 min ( 843.3 - 797.7 ) Volume Invert Avail.Stora• e Stara • e Descri .tion #1 934.00' Elevation feet 934.00 936.00 938.00 Surf.Area 1,721 6,597 15,701 29,442 cf Custom Stage Data (Irregular) Listed below (Recalc) Perim. s . -ft feet 161.0 421.0 815.0 Device Routing Invert Outlet Devices Inc.Store Cum.Store cubic -feet cubic -feet 0 0 7,792 7,792 21,650 29,442 Hydrograph 8.18 cfs Pond Pond B7A: • Type 1124 -hr 100 -Year Rainfall =5.90" Printed 11/1112008 Page 103 Wet.Area s• -ft 1,721 13,777 52,549 #1 Primary 930.16' 21.0" x 322M' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 928.00' S= 0.0067 '1' Cc= 0.900 n= 0.013 #2 Device 1 936.00' 48.0" Horiz. Orifice /Grate Limited to weir flow C= 0.600 Primary OutFlow Max =17.07 cfs ( 12.10 hrs H W = 936.56' TW=928.95' (Dynamic Tailwater) ----'I =Culvert (Passes 17.07 cfs of 20.07 cfs potential flow) --2 =Orifice /Crate (Weir Controls 17.07 cfs © 2.44 fps) 20 i 1 7 a _ 17.08 cfs I 16 pr, lov-FL- 13 i ed. Or0g0- 14'i 0 f, 1i 10- 100 . , i 00 2 ---" " * //'47 , ' . / . i.-,' Med F O i #4)-1lPlriffOAeei~eero~. ' :1,7 1-- . ZeOZZOONNY ili de#I4w - - /, f . -4• W:. , 7,,,,. / ',/#,. ...,k dOZ, r-- 4,:#;,71;/0".,747,09-Z 6 9', WI#11 8'=„ , °,P1 7 F/di . , : : : , . . , , Of i_4 6 ' Or':. : . . . : , , : : , 5 --;- °,14#0 094 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Inflow 0 Primary