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<br />C~ <br />5 <br />Watershed Data <br />Curve Number = 63 <br />Area = 12.2 acres <br />Hydraulic Length = 1200 feet <br />Elevation Change = 700 feet <br />Concentration Time = 0.02 hours <br />Concentration Time Type = SCS Upland Curves <br />Unit Hydrograph Type = Disturbed <br />Elk Creek Light Use Road - 48" CMP <br />Storm Data <br />Total Precipitation = 2.4 inches <br />Storm Type = SCS Type 2, 25 Yr 24 Hr Storm <br />Peak Discharge = 1.64 cfs <br />Discharge volume- - - = 0.22 acre-feet <br />48" CMP Capacity = 63 cfs <br />Elk Creek Light Use Road - 18" CMP <br />• <br />• <br />Watershed Data <br />Curve Number = 63 <br />Area = 20.9 acres <br />Hydraulic Length = 1650 feet <br />Elevation Change = 910 feet <br />Concentration Time = 0.04 hours <br />Concentration Time Type = SCS Upland Curves <br />Unit Hydrograph Type = Disturbed <br />Storm Data <br />Total Precipitation = 2.4 inches <br />Storm Type = SCS Type 2, 25 Yr 24 Hr Storm <br />Peak Discharge = 3.05 cfs <br />Discharge Volume = 0.37 acre-feet <br />48" CMP Capacity = 5.5 cfs <br />The calculations presented above show that the four culverts <br />associated with the Elk Creek Light Use Road can pass the runoff <br />from a 25 year 24 hour storm. <br />The calculations and i~ <br />was prepared by me <br />information presented <br />knowledge and belief. <br />James EO.6 <br />Registered F <br />State of C <br />on pages H-159 and B-160 <br />of June 1994, and the <br />ect to the best of my <br /><~o <br />-19230 ~'~ * a ~-z7- 9~ <br />r, P-~~p~ Date <br />sional_~#q~neer <br />B-160 6/94 <br />