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<br />r1 <br />LJ <br /> <br />3.2 Land Use Condition (LUC) <br />LUC values are consistently applied as presented in the following table (reference SEDCAD+ <br />guide). <br />Table 3.2-1 LUC Values <br />Land Use Overland Flow Condition Concentrated Flow <br /> Condition <br />Undisturbed portions of the 2 6 <br />watershed (oak brush and <br />grass woodland) <br />Cut (Soil Guard) and fill 5 7 <br />slopes (bare soil) <br />Compacted Areas (bare soil, 5 7 <br />unvegetated) <br />Graveled areas (bare, 5 7 <br />unvegetated) <br />Ditches (does not occur) 8 <br />4. UNIQUE SEDCAD+ INPUT PARAMETERS <br />SEDCAD+ parameters unique to a situation are introduced as erKOUntered under area specific <br />discussions. <br />4.1 Acreages <br />Acreage of watersheds was measured from the largest scale map (see Pazagraph 1.3.2) that <br />included the entire watershed. Acreage of watersheds are presented in Enclosure 3. <br />4.2 Curve Number (CN) <br />Curve numbers reflect the runoff potential of an area (a value of 100 represents an impervious <br />area where 100% of the water would run off), and is a function of soil type (a hydrologic soil <br />group of "C" is used in this analysis) and the land use. CN values determined (reference the <br />SEDCAD+ guide) for conditions considered in this analysis are presented in the following table. <br />(Lone Pine Gulch SAES Demonstration, 12 Ocrober 95, Page 6 of 13) <br />