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SITE DITCHES AND CULVERTS <br />i• <br />u <br /> <br />TR-01 <br />DITCH - C4 <br /> <br />Watershed data for watershed #1 Rock Transition <br /> Curve number 63 <br /> Area 2.4 Acres <br /> Hydraulic length 900 Feet <br /> Elevation change 250 Feet <br /> Concentration time 0.03 Hours <br /> Concentration time type SCS Upland Curves <br /> Unit hydrograph Forested <br /> <br />Watershed data for watershed #2 Mixed Shrub <br /> Curve number 41 <br /> Area 1.5 Acres <br /> Hydraulic length 660 Feet <br /> Elevation change 110 Feet <br /> Concentration time 0.18 Hours <br /> Concentration time type SCS Upland Curves <br /> Unit hydrograph Forested <br /> <br />Watershed data for watershed #3 Disturbed <br /> Curve number 67.6 <br /> Area 3.3 Acres <br /> Hydraulic length 540 Feet <br /> Elevation change 100 Feet <br /> Concentration time 0.04 Hours <br /> Concentration time type SCS Upland Curves <br /> Unit hydrograph Disturbed <br /> <br />Watershed data for watershed #4 Rock Slide <br /> Curve number 89 <br /> Area 0.2 Acres <br /> Hydraulic length 1080 Feet <br /> Elevation change 290 Feet <br /> Concentration time 0.04 Hours <br /> Concentration time type SCS Upland Curves <br /> Unit hydrograph Forested <br /> <br />Total Area 7.4 Acres <br /> <br />Storm data <br /> Total precipitation 1.6 Inches <br /> Storm Type SCS Type 2 storm, 2 4 hour storm <br /> Peak discharge 2.48 cfs <br /> <br /> <br />Flow from other ditches or culverts 3.74 Ddch C3 <br /> <br /> <br />Peak dischar a 6.22 cfs <br />Exh-8 - 62 - <br />9/97 <br />