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TABLE 1 <br />RUNOFF FACTORS FOR STORM SEWERS <br />FLAT <br />0-51 <br />UNDEVELOPED LAND <br />1 <br />Wood $ Forest . . . . . . . . . 0.05 <br />Sparse Trees $ . Ground Cover . . . . . 0.10 <br />Light Grass to Bare Ground . . . . . . 0.15 <br />1 DEVELOPED AREA <br />Pavement $ Roofs •. . . 0.90 <br />Gravel Roads $ Parking Lots . . . 0.75 <br />City Business .. . . . . . . . . 0.85 <br />Apartment Dwelling Areas . . . . . . . 0.80 <br />Industrial Areas (Heavy) . 0.70 <br />Industrial Areas (Light) . . . . . . . 0.60 <br />Earth Shoulder . . . . . . . . . . . . 0.50 <br />Playground . . . . . . . . . 0.25 <br />Lawns, Meadows $ Pastures . . . . . . . 0.20 <br />Parks f, Cemetery . . . . . . . . . . . 0.15 <br />SINGLE FAMILY RESIDENTIAL. <br />(Dwelling Unit/Gross Acre) <br />ROLLING <br />>5I <br />0.io <br />0.15 <br />0.20 <br />0.90 .. <br />0.80 <br />0.90 <br />0.85 <br />0.80 <br />0.70 <br />0.50 <br />0.30 <br />0.25 <br />0.20 <br />1.0-1.5 <br />DU/GA . . . . . . . <br />. . . . . . . . 0.30 <br />1.5-3.0 <br />DU/GA . . . . . . . <br />. .. . . . . . . 0.35 <br />3.0-3.5 <br />DU/GA . . . . . . . <br />. . . . . . . . 0.40 <br />3.5-4.0 <br />DU/GA . . . . . . . <br />. . . . . . . . 0.45 <br />4.0-6.0 <br />DU/GA . . . . . . . <br />. . . . . . . . 0.50 <br />6.0-9.0 <br />DU/GA . . . . . . <br />. . . . . . . . 0.60 <br />9.0-15.0 <br />DU/GA . . . . . . . <br />. . . . . . . . 0.70 <br />18 <br />5/79 <br />as <br />�I <br />.I <br /><■ <br />