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TCble 2 C Factors for Permanent Pasture, Rangeland, Idle Land, and Grazed Woodlands (after Wischmeier and Smith, 19781° Vegetal canopy Cover that comacts the surface Percentage ground co ver Type and height of Canopy raised canopy" cover (%) Type" 0 20 40 60 60 95-10(1 No appreciable canopy G 0.45 0.20 0.10 0.042 0.013 0.003 W 0.45 0.24 0.15 0.090 0.043 0.011 Canopy of ull weeds or 25 G 0.36 0.17 0.09 0.038 0.012 0.003 shop brush (0.5-m fall height) W 0.36 0.20 0.13 0.082 0.041 0.011 SO G 0.26t 0. { 3 0.07 0.035 0.012 0.003 W 0.26 0.16 0.11 0.075 0.039 0.011 75 G 0.17 0.10 0.06 0.031 0.011 0.003 W 0.17 0.12 0.09 0.067 0.038 O.OII Appreciable brush or bushes 25 G 0.40 0.18 0.09 0.040 0.013 0.003 (2-m fall height) W 0.40 0.22 0.14 0.085 0.042 O.OI I 50 G 0.34 0.16 0.085 0.038 0.012 0.003 W 0.34 0.19 0.13 0.081 0.041 0.011 75 G 0.28 0.14 0.08 0.036 0.012 0.003 W 0.28 0.17 0. V 2 0.077 0.040 0.011 Trees, but no appreciable 25 G 0.42 0.19 0.10 0.041 0.013 0.003 low brush (4-m fall height) W 0.42 0.23 0.14 0.087 0.042 0.011 SO G 039 0.18 0.09 0.040 0.013 0.003 W 0.39 0.21 0.14 0.085 0.042 0.011 75 G 0.36 0.17 0.09 0.039 0.012 0.003 W 0.36 0.20 0.13 0.083 0.041 0.011 °AII values shown assume: (1) random distribution of mulch or vegetation and (2) mulch of appreciable depth where it exists. Idle land refers to land with undisturbed profiles for at least a period of 3 consecutive years. Also to be used (or burned forest land and forest land that has been harvested ku than 3 years ago. °Average fall height of waterdrops from canopy to soil surface in meters. `Portion of total surface area that would be hidden from view by canopy in a vertical projection (a bird'stye view). "G, cover at surface is grass, grasslike plants, decaying compacted duff, or litter et least 2 in. dap. W, rnver at surface is mostly broadkat tte[baceous planes (as weeds with link taknl root network near the surftce) and/or undecayed residue.