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RUNOFF FACTORS FOR STORM SEWERS <br />C (Values of "C" in Q = CIA) <br />UNDEVELO?ED LAND <br />Wood & Forest <br />FLAT ROLLING <br />0-5% 5% <br />0.10 <br />Sparse Trees &•Ground Cover 0.15 <br />Light Grass to Bare Ground 0.20 <br />DEVELOPED AREA <br />0.15 <br />0.20 <br />0.25. <br />Pavement & Roofs 0.90 0.90 <br />Gravel Roads & Parking Lots 0.75 0.80 <br />City Business 0.85 0.90 <br />Apartment Dwelling Areas 0.80 0.85 <br />Industrial Areas (Heavy) 0.70 0.80 <br />Industrial Areas (Light) 0.60 0.70 <br />Earth Shoulder 0.50 0.50 <br />Playground 0.25 0.30 <br />Lawns, Meadows & Pastures 0.20. 0.25 <br />Parks & Cemeteries 0.15 0.20 <br />SINGLE FAMILY RESIDENTIAL <br />(Dwelling Unit/Gross Acre) <br />1.0 - 1,5 DU/GA 0.30. <br />1.5 - 3.q DU/GA 0.35 <br />3.0 - 3.5 DU/GA 0.40 <br />3.5 - 4.0 DU/GA 0.45 <br />4.0 - 6.0 DU/GA 0.50 <br />6.0 - 9.0 DU/GA 0.60 <br />9.0 - 15.0 DU/GA 0.70 <br />18 <br />