Laserfiche WebLink
Table 8.8 Selected USLE C Values for Construction, Mining, <br />and Forest Lands. <br />Condition <br />C factor <br />References <br />Condition <br />C factor <br />References <br />1. Bate soil conditions <br />5. Undisturbed forest <br />Undisturbed except scraped <br />0.66 -1.30 <br />° <br />10045% canopy, 1004M litter <br />0.0001 -0.001 <br />C <br />Compacted <br />35-20% canopy, 70-10% litter <br />0.003-0.009 <br />r <br />Smooth <br />1.00 -1.40 <br />°b <br />6. Pamanent pasture and brush cover <br />Root raked <br />0.90 -1.20 <br />° <br />0% canopy. 80% ground cover <br />Disk tillage <br />Grata <br />0.013 <br />° <br />Fresh <br />1.00 <br />° <br />weeds <br />0.043 <br />After one rain <br />0.89 <br />° <br />50% Brush, 80% ground cover <br />2. Mulch <br />Grass <br />0.012 <br />Straw <br />7. Mechanically prepared woodland sites <br />0.5 tons/ac <br />0.30 <br />ad <br />Burned, 10% cover at ground <br />1.0 tonr/ac <br />0.18 <br />ad <br />Good soil <br />0.240 <br />° <br />2.0 tons/ac <br />0.09 <br />ad <br />Poor soil <br />0.360 <br />° <br />4.0 tonVac <br />0.02 <br />ad <br />Burned. 0% cover at ground <br />WOW chips <br />Good soil <br />0.260 <br />C <br />0.5 tolwac <br />0.90 <br />ad <br />Poor soil <br />0.450 <br />° <br />2.0 tons/ac <br />0.70 <br />ad <br />Disked. 0% cover at ldmund <br />4.0 tons/ac <br />0.42 <br />ad <br />Good soil <br />0.720 <br />° <br />6.0 tots/ac <br />0.22 <br />ad <br />Poor soil <br />0.940 <br />3. Chemical bhuh ns <br />Asphalt emulsion, 605 gal/ac <br />0.14-0.52 <br />° <br />Aquatan, Tem4ack <br />0.67 <br />° <br />4. Scedings <br />No prepared seedbed <br />New planting <br />0.64 <br />° <br />After 60 days <br />Prepared <br />0.54 <br />° <br />seedbed <br />New planting <br />0.40 <br />° <br />After 60 days <br />0.05' <br />° <br />Note. Additional values are given in Appendix 8B. <br />°ltaaaponation Research Board (1980). <br />bBwfieW et at. (1988). <br />cwtschmeier and Smith (1978). <br />dMeyer et al. (1972). C factors for mulch vary depending on slope length and steepness. Slope length limits apply (see Appendix 8B, Table 8B.5). <br />REVISED AUGUST 2009 Attachment 2.05.3(3) -6 -6 <br />