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The curve numbers and "k" factors were then "weighted" for each <br />subwatershed as shown on Tables 7-6f-5 tlZrouc~~ 7-6f-7 and 7-6f-8 through • <br />7-6f-10, respectively. <br />TABLE 7-6f--3 <br />SCS Curve Number <br />Seneca II Mine, ('.olorado <br /> Vegetation Hydrologic Hydrologic <br />Cover Type Cover Corrlitions Soil Type <br /> B C D <br />RECCAI4IID AREA (Herbaceous) fair to <br />(Seeded gr:~sses-contoured) 50-80$ good 69 78 83 <br />UNDISTURBID AREAS <br />Qak-Acron: <br />(Mixed Brush-Aspen) 30-70$ fair 48 57 63 <br /> 70-100$ good 30 51 48 <br />Sage~Yass: <br />(Upland Sagebrush) 30-70$ fair 51 63 70 <br /> 70-100$ good 35 47 55 <br />Pasture or Range <br />(GYassland used for 30-70$ fair 69 79 84 <br />grazing) 70-100$ goad 61 74 80 <br />Herbaceous (Range) <br />(GYass/Weed/Ivw growing 30-70$ fair 71 81 89 <br />brush) 70-100$ good 62 74 85 <br />DISTURBID AREAS <br />Paved w/open ditches <br />(including right-of-way) 89 92 93 <br />Gavel Roads <br />(including right-of-way) 85 89 91 <br />Dirt Roads <br />(including right-of~ray) 82 87 89 <br />Newly graded areas or <br />bare ground 86 91 94 <br />Sources: Revised SCS Technical Release No. 55. <br />Communications with the Colorado and Arizona SCS Hydrologists <br />(August 5, 1985). <br /> <br />u <br />7-6f-4 Revised 08/21/91 <br />