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Existing Twin Lakes West-Prelim. Subdivision Type 1124-h� 100 y� Rainfall=5.90"
<br />Prepared by RLK Incorporated Page 16
<br />�droCADC� 7.00 s/n 000754 �O 1986-2003 Appiied Microcomputer Systems 10/6/2006
<br />Reach 1 R: Total to Cleveland
<br />Inflow Area = 18.820 ac, Inflow Depth = 4.93" for 100-yr event
<br />Inflow = 76.43 cfs @ 12.20 hrs, Volume= 7.737 af
<br />Outflow = 76.43 cfs @ 12.20 hrs, Volume= 7.737 af, Atten= 0%, Lag= 0.0 min
<br />Routing by Stor-Ind+Trans method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs
<br />Pond CITY: Existing City Stormwater Pond
<br />Inflow Area = 36.090 ac, Inflow Depth = 4.42" for 100-yr event
<br />Inflow = 200.04 cfs @ 12.06 hrs, Volume= 13.287 af
<br />Outflow = 149.70 cfs @ 12.15 hrs, Volume= 13.174 af, Atten= 25%, Lag= 5.6 min
<br />Primary = 5.74 cfs @ 12.15 hrs, Volume= 5.155 af
<br />Secondary = 143.96 cfs @ 12.15 hrs, Volume= 8.018 af
<br />Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs
<br />Starting Elev= 905.72' Surf.Area= 62,924 sf Storage= 87,835 cf
<br />Peak Elev= 909.18' @ 12.15 hrs Surf.Area= 79,353 sf Storage= 243,646 cf ( 155,811 cf above starU
<br />Flood Elev= 910.00' Surf.Area= 83,969 sf Storage= 286,425 cf (198,590 cf above star�
<br />Plug-Flow detention time= 231.2 min calculated for 11.155 af ( 84% of inflow)
<br />Center-of-Mass det. time= 120.4 min ( 919.2 - 798.8 )
<br /># Invert Avail.Storage Storaqe Description
<br />1 905.00' 223,093 cf Storage Above Cell Separation ( Irregula� Listed below
<br />2 900.00' S5,077 cf North Cell ( Below Cell Separation� ( Irregula� Listed below
<br />3 900.00' 8,255 cf South Cell ( Below Cell Separatiora ( Irregula� Listed below
<br />286,425 cf Total Available Storage
<br />Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area
<br />( fee� ( sq-f� ( feeU ( cubic-fee� ( cubic-fee� ( sq-f�
<br />905.00 25,965 1,221.0 0 0 25,965
<br />905.50 36,017 1,295.0 15,427 15,427 40,794
<br />908.00 46,726 1,380.0 103,139 118,566 59,195
<br />910.00 58,004 1,441.0 104,527 223,093 73,176
<br />Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area
<br />( fee� ( sq-fU ( fee� ( cubic-fee� ( cubic-feeQ ( sq-f�
<br />900.00 5,058 465.0 0 0 5,058
<br />902.00 9,222 626.0 14,073 14,073 19,078
<br />904.00 14,525 702.0 23,547 37,620 27,219
<br />905.00 20,563 824.0 17,457 55,077 42,054
<br />Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area
<br />( feeQ ( sq-f� ( fee� ( cubic-feeU ( cubic-feeQ ( sq-f�
<br />900.00 31 32.0 0 0 31
<br />902.00 921 184.0 747 747 2,653
<br />904.00 2,748 274.0 3,507 4,254 5,965
<br />905.00 5,402 402.0 4,001 8,255 12,859
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