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Existing Twin Lakes West-Prelim. Subdivision Type 1124-h�NURP Rainfall--2.50" <br />Prepared by RLK Incorporated Page 19 <br />HydroCADC� 7.00 s/n 000754 �O 1986-2003 Applied Microcomputer Systems 10/6/2006 <br />Subcatchment 35W-5: Northwest Portion to Wilson Pond <br />Runoff = 12.48 cfs @ 12.14 hrs, Volume= 0.982 af, Depth= 0.79" <br />Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs <br />Type II 24-hr NURP Rainfa11=2.50" <br />Area ( ac) CN Description <br />0.440 61 >75% Grass cover, Good, HSG B <br />9.370 85 Gravel roads, HSG B <br />3.870 55 Woods, Good, HSG B <br />1.280 98 Paved parking & roofs <br />14.960 78 Weighted Average <br />Tc Length Slope Velocity Capacity Description <br />( min) ( fee� ( ft/f� ( ft/sec) ( cfs) <br />2.3 23 0.3300 0.2 Sheet Flow, <br />Woods: Light underbrush n= 0.400 P2= 2.80" <br />11.0 147 0.0020 0.2 Shallow Concentrated Flow, <br />Woodland Kv= 5.0 fps <br />1.9 233 0.0168 2.1 Shallow Concentrated Flow, <br />Unpaved Kv= 16.1 fps <br />1.8 109 0.0431 1.0 Shallow Concentrated Flow, <br />Woodland Kv= 5.0 fps <br />2.7 346 0.0179 2.2 Shallow Concentrated Flow, <br />Unpaved Kv= 16.1 fps <br />19.7 858 Total <br />Subcatchment CLEV: West Portion to Cleveland Ave. <br />Runoff = 11.03 cfs @ 12.13 hrs, Volume= 0.856 af, Depth= 1.61" <br />Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs <br />Type II 24-hr NURP Rainfa11=2.50" <br />Area ( ac� CN Description <br />1.780 74 >75% Grass cover, Good, HSG C <br />4.600 98 Paved parkin & roofs <br />6.380 91 Weighted Average <br />