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0 Table 3 - "C" Factors for Universal Soil Loss Equation <br />"C" Factors for Perme'nant'Pasture and Rangeland <br />(EPA, 1977) <br />Vegetative Canopy Cover That Contacts the Surface 1/ <br />Type and Height Canopy Percent Ground Cove <br />v <br />3/ <br />2/ C <br />f R <br />is <br />d C <br />o e 4/ <br />T <br />o <br />e <br />an <br />py <br />o <br />a <br />e yp <br /> 0 10 20 40 60 80 95-100 <br />No appreciable canopy G 1.0 .45 .20 .10 .042 .013 .003 <br /> W 1.0 .45 .24 ..15 .090 .043 .011 <br />Canopy of tall forbs 25 G 1.0 .36 . ..17 .09 ..038 .012 .003 <br />or short brush W 1.0 .36 .20 .13 .082 .041 .011 <br />(0.5 m fall ht.) 50 G 1.0 .26 .13 .07 .035 , .012 .003 <br /> W 1.0 .26 .16 . .11 .075 .039 .011 <br />75 G 1.0 .17 .10 .06 .031 .011 ' .003 <br /> W 1.0 .17 .12 .07 .067 .038 .011 <br />Appreciable brush 25, G 1.0 .40 .18 '.09 .040 .013 .003 <br />or brushes W 1.0 .40 .22 .14 .085 .042 .011 <br />(2 m fall ht.) 50 G L.0 .34 .16 .085 .038 .012 .003 <br /> W 1:0 .34 .19 .13 .081 .041 .011 <br />75 G .1.0 .28 .14 .08 .036 .012 .003 <br /> W 1.0 .28 .17 .12 .077 .040 .011 <br />Trees but no appreciable 25 G 1.0 .42 .19 ".10 041 .013 .003 <br />low. brush W 1.0 .42 .23 .14 .087 .042 .011 <br />-,(4 m fall ht.) 50 G 1.0 .39 .18 .09 .040 .013 .003 <br /> W 1.0 .39 .21. .14 AM .042 .011 <br />.75 G 1.0 .36 .17 .09 .039 .012 ..003 <br />1/ All values shown assume: (i) random distribution of mulch or vegetation, and (2) mulch of appreciable depth where it exists. <br />2/ Average fall height of waterdrops from canopy to soilsurface: m=meters. <br />3/ Portion of total-area surface that would be hidden from view by canopy in a vertical. projection , (a bird's-eye view). <br />G: Cover at- surface is grass, grasslike plants,. decaying compacted duff, or litter. <br />W: Cover at surface is mostly broadleaf herbaceous plants (as weeds with little lateral-root network near the surface , and/or <br />lundecayed residue.) <br />SL-12 DRAFT 20AUG10.wpd 24