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<br />• <br />Elk Creek Light Use Road - 48" CMP <br />Watershed Data <br />Curve Number <br />Area <br />Hydraulic Length <br />Elevation Change <br />Concentration Time <br />Concentration Time Type <br />Unit Hydrograph Type <br />Storm Data <br />Total Precipitation <br />Storm Type <br />Peak Discharge <br />Discharge volume <br />= 63 <br />= 12.2 acres <br />= 1200 feet <br />= 700 feet <br />= 0.02 hours <br />= SCS Upland Curves <br />= Disturbed <br />= 2.4 inches <br />= SCS Type 2, 25 Yr 24 Hr Storm <br />= 1.64 cfs <br />= 0.22 acre-i-eet <br />48" CMP Capacity <br />Elk Creek Light Use Road - 18" CMP <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 />= 63 <br />cfs <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 <br />= 5.5 <br />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 infp~~mation presented on pages B-159 and B-160 <br />was prepared by mq°°~ua the month of June 1994, and the <br />information presep~@~°~33°r,° and correct to the best of my <br />knowledge and be ~"~. '~o`;Foa <br />~~~~~~e ~-z~-9~ <br />~Jam~~,~.- Stover, g~~. Date <br />RegisteoProfessi 1 Engineer <br />• State ~`'s~1.pF~~ o. 19230 <br />°°oUNAI ea° <br />°°°`~ B-160 6/94 <br />