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Table 4.6-5 Curve Numbers of Subwatershed Areas <br />Hydrologic <br />Classification Curve <br />Subwa "h d ond~t+on* o So'1 N mh <br />Topsoil Stripped - Uncontoured Poor (7) C 86 <br />Pit poor (7) C 90 <br />Spoil Poor (7) B 79 <br />Undisturbed Spoil - Rangeland poor (7) B 79 <br />Undisturbed Oak an d Aspen - 60B Cover Good (7) C 53 <br />Topsoil Replaced - Contoured and <br />Seeded up to 1 Yea r Poor (7) C 81 <br />Topsoil Replaced - Contoured and <br />Seeded 2 Years Fair (5) C 75 <br />Topsoil Replaced - Contoured and <br />Seeded 3 Years Fair (5) C 75 <br />Topsoil Replaced - Contoured and <br />Seeded 4 Years Good (3) C 70 <br />Topsoil Replaced - Contoured and <br />Seeded 5+ Years Good (3) C 70 <br />* numbers in parentheses indicate condition equation used to determine <br />velocity (Figure 2.34, page 100, "Applied Hydrology and Sedimentology for <br />Disturbed Areas", Barfield, Warner and Haan, 1983 <br /> <br />4.6-18 <br />November 1,1989 <br />