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• Particle Size (mm) Percent finer <br />127.0 100 <br />11.2 82 <br />2.0 78 <br />1.0 76 <br />0.50 74 <br />0.25 72 <br />0.106 69 <br />0.045 33 <br />0.020 29 <br />0.010 20 <br />0.005 15 <br />0.002 11 <br />0.001 8 <br />0.0001 0 <br />• The specific gravity and submerged bulk specific gravity were estimated <br />to be 2.50 and 1.25, respectively. <br />The slope length (L) and the watercourse slope (S) were determined <br />according to the equation for a Length Slope Factor (LS) (Barfield et <br />al, 1981). <br />LS = r ~ ~m 430x2 + 30x + 0.431 <br />L~Ti 3 / <br />Where ~ is slope length, x is sin e g is slope angle, and m is an <br />exponent dependent upon the slope given by: <br />slope ~ 3%; m = 0.3 <br />slope = 4%; m = 0.4 <br />slope 3 5%; m = 0.5 <br />and x = Stream Elevation Difference <br />• S ope Length <br />7-6b-3 Revised 8/27/86 <br />