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• TABLE 2 <br /> SCS Curve Numbers <br /> for <br /> Nucla Mine <br /> Montrose County, Colorado <br /> Hydrologic <br /> Hydrologic Soil Group <br /> Land Use - Vegetation Type Condition B C D <br /> <br /> Undisturbed Areas <br /> Cu]tivated Land Poor 76 84 88 <br /> (Small Grain) Good 75 83 87 <br /> Rotation Meadow Poor 75 83 85 <br /> (Contoured) Good 69 78 83 <br /> Meadow (Riparian) Good 58 71 78 <br /> Pasture or Range Poor 79 86 89 <br /> Fair 69 79 84 <br /> Good 61 74 80 <br /> Juniper - Grass Poor 75 85 89 <br /> Fair 58 73 80 <br />• Upland Sagebrush - Grass Poor 67 80 85 <br /> Fair 51 63 70 <br /> Residential: <br /> 1/8-acre lots Average 85 90 92 <br /> 1/4-acre lots Average 75 83 87 <br /> 1/3-acre lots Average 72 81 86 <br /> 1/2-acre lots Average 70 80 85 <br /> 1.0-acre lots Average 68 79 84 <br /> Disturbed Areas <br /> Newly Graded Areas Average 86 91 94 <br /> Paved Roads Average 89 92 93 <br /> Gravel Roads Average 85 89 91 <br /> Dirt Roads Average 82 87 89 <br /> Reclaimed Areas <br /> Herbaceous Pre-Law (1977) Average 80 87 -- <br /> Herbaceous Post-Law (1977) Average 71 81 -- <br /> <br />5 <br />