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Stormwater CalculationsAug 19 10 05:11p Tedd Mattke (783) 783 -0300 p.1 Gedney -- Proposed Conditions Type// 24-hr 1 -Year Rainfall = 2.40" Prepared by {enter your company name here) HydroCADS 7.00 s/n 003205 ®1986-2003 Applied Microcomputer Systems 8/15/2010 Pond 11 P: Pond Inflow Area = 0.890 ac, Inflow Depth = 2.04" for 1 -Year event Inflow — 1.55 cfs @ 12.23 hrs, Volume= 0.151 of Outflow = 0.72 cfs @ 12.56 hrs, Volume= 0.149 af, Atten= 54%, Lag =19.9 min Primary = 0.72 cfs Q 12.56 hrs, Volume= 0.149 of Routing by $tor -Ind method, Time Span= 0.00 -20.00 hrs, dt— 0.05 hrs Peak Elev= 754.72' @ 12.56 hrs Surf.Area= 0.068 ac Storage= 0.046 of Plug -Flow detention time= 46.4 min calculated for 0.149 of (98% of inflow) Center -of -Mass det. time= 40.1 min ( 786.8.745.8 ) # Invert Avail.Storage Storage Description 1 754.00' 0.145 of Custom Stage Data (Prismatic) Listed below Elevation Su(f.Area Ine.Store Cum.Store (feet) (acres) nacre -feet) (acre -feet) 754.00 0.057 0.000 , 0.000 755.00 0.072 0.065 0.065 756.00 0.088 0.080 0.145 _ # Routing Invert Outlet Devices 1 Primary 0.00' Ditch - -"-- '- Elev. (feet) 754.00 755.00 756.00 Ditch. (ds) 0.00 1.00 3.00 Primary OutFlow Max cfs @ 12.56 hrs HW= 754.72' (Free Discharge) 't-1 =Ditch (Custom Controls 0.72 cfs) 4)AY 7 q1;5 /'a nut 19 10 05:11P Tedd Mattke Gedney -- Proposed Conditions Prepared by {enter your company name here) HydroCAD® 7.00 s/n 003205 ®1986 -2003 Applied N w s LL (763) 793 -0300 P.2 Type// 24 -hr 9 -Year Rainfall = 2.40" Pond 11P: Pond Hydrograph C Inflow Area =0.890 ac Peak Elev= 754.72' Storage =0.046 of ij inflow 1 . 0 Primary 1 2 3 4 5 6 8 10 11 Time (hours) 13 14 15 16 17 18 19 Aug 19 10 05:12P Tedd Mattke Cedney - Proposed Conditions Prepared by {enter your company name (7631 783 -0300 P.3 Type !I 24 -hr 90 -Year Event Rainfall =4.20" Pond 11 P: Pond ❑ Primary 2 3 4 5 6 7 8 9 1 12 13 14 15 16 17 18 19 20 Time (hmn) Rug 19 10 05:12p Tedd Mattke (763) 783 -0300 p.4 Gedney — Proposed Conditions Type// 24 -hr 900 -Year Rainfall =6.00" Prepared by {enter your company name here} HydroCAD® 7.00 sm 0032o5 019(ifr-2003 Applied Microcomputer Systems 811512010 Pond 19 P: Pond 1 2 3 4 5 6 7 8 9 10 1'1 Time (hours) 3.196 era :... Mo. o Pdrmry Aug 19 10 OS:12p 7edd Mattke (763) 783 -0300 p.S Gedney -- Existing Conditions Type II 24 -hr 1 -Year Rainfall 2.40" Prepared by (enter your company name herel HWroCAD® 7.00 s/n 003205 ®1986 -2003 Appled Microcomptter Systems 8 /15/2010 Subcatchment 1GS: Existing Drainage Area Q Runoff �l •'!Tr•I r�T�'(•!�1`!' I . ! .. 1 !TI 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Time (hours) Hydrograph 0.65. _ C 0.67 .. -T 11:24- .hr..1: Year..... ype. 0.55 Rainfa11= 2:40" .Runoff Area =0.890 ac o45. 0 . 4 Runoff Volume =0:054 aif 0.35. :.... Runoff t3ep #h= 0.73" U . 0.3- Tc =30.0 miry 02 . ......_ ....... ca =s0 0.2 0.15 0.1 e.� .... ..... ....... Q Runoff �l •'!Tr•I r�T�'(•!�1`!' I . ! .. 1 !TI 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Time (hours) Aug 19 10 05:12p Tedd Mettke (763) 783 -0300 p-6 Gedney -- Existing Conditions Type 1124 -hr 10 -Year Event Rainfall =4.20" Prepared by {enter your company name here} HydroCAD® 7.04 Stn 003205 ®1986-2003 Appied McrocompA2r Systems 8/15/2010 Subcatchment 10S; Existing Drainage Area Nydrograph D Runoff 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Time (hours) Aug 19 10 05:13p Tedd Mattke (763) 783 -0300 p.7 Gedney -- Existing Conditions Type// 24-hr 900-Year Rainfat1 =6.00" Prepared by (enter your company name here) HydroCAM 7.00 s/n 003205 ®1986-2003 Appked Microcomputer Systems 8/1512010 Subcatchment 10S: Existing Drainage Area Ile C 3 Type 11:24 -hr 100 00-Yea: er ? Rainfall= 6.00" Runoff Area =0.890 ac z Runoff Volume - of LL - Runoff Depth= 3.49" Tc =30.0 min; ca=80. 0 1 2 3 4 5 8 7 8 6 10 11 1 Time (hours) 16 17 18 19 20