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Table 5 - "C" Factors for Universal Soil Loss Equation <br />Type and Height • Canopy Percent Ground Cover <br />of Raised Canopy 2/ Cover 3/ Type 4/ <br />No appreciable canopy <br />Canopy of tall forbs <br />or short brush <br />(0.5 m fall ht.) <br />Appreciable brush <br />or brushes <br />(2 in fall ht.) <br />Trees but no appreciable <br />low brush <br />.(4 in fall ht.) <br />"C" Factors for Permanent - Pasture and Rangeland <br />(EPA, 1977) <br />Vegetative Canopy Cover That Contacts the Surface 1/ <br />25 <br />50 <br />75 <br />25 <br />50 <br />75 <br />25 <br />50 <br />75 <br />1/ All values shown assume: (1) random distribution of mulch or vegetation, and (2) <br />2/ ' Average fall height of waterdrops from canopy to soil surface: m =meters. <br />3/ Portion of total -area surface that would be hidden from view by canopy in a <br />4/ G: Cover at surface is grass, grasslike plants, decaying compacted duff, or <br />W: Cover at surface is mostly broadleaf herbaceous plants (as weeds with little <br />!undecayed residue.) <br />SL -14 03DEC12.wpd 37 <br />0 10 <br />20 40 60 80 95 -100 <br />1.0 .45 • .20 .10 .042 .013 .003 <br />1.0 .45 .24 .15 .090 .043 '.011 <br />1.0 .36 .17 .09 .038 .012 .003 <br />1.0 .36 • .20 .13 .082 .041 .011 <br />1.0 .26 .13 .07 .035 .012 .003 <br />1.0 .26 .16 .11 .075 .039 .011 <br />1.0 .17 .10 .06 .031 .011 ' .003 <br />1.0 .17 .12 .07 .067 .038 .011 <br />1.0 .40 .18 ' .09 .040 .013 .003 <br />1.0 .40 .22 .14 .085 .042 .011 <br />LO .34 .16 .085 .038 .012 .003 <br />1.0 .34 .19 .13 - .081 .041 .011 <br />1.0 .28 .14 .08 .036 .012 .003 <br />1.0 .28 .17 .12 .077 .040 .011 <br />1.0 .42 .19 . .10 .041 .013 .003 <br />1.0 .42 .23 .14 .087 .042 .011 <br />1.0 .39 .18 .09 .040 .013 .003 <br />1.0 .39 .21 .14 .085 .042 .011 <br />1.0 .36 .17 .09 .039 .012 .003 <br />mulch of appreciable depth where it exists. <br />vertical projection, (a bird's -eye view). <br />litter. <br />lateral -root network near the surface, and/or <br />