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Z ggloN AMMDIEM COMQL SHORT COURSE Page 25 <br /> Table 1 (continued) <br /> parmen C-Factor P-Factor <br /> TERRACING <br /> Must contain 10-year runoff volumes without overflowing, <br /> otherwise P-Factor = 1 .00 <br /> t ooe A <br /> 1 to 2 . . . . . . . . . . . . . . . . . 1.00 0 . 12 <br /> 3 to 8 . . . . . . . . . . . . . . . . . 1 . 00 0 .10 <br /> 9 to 12 . . . . . . . . . . . . . . . . 1 . 00 0 .12 <br /> 13 to 16 . . . . . . . . . . . . . . . . 1.00 0 .14 <br /> 17 to 20 . . . . . . . . . . . . . . . . 1.00 0.1,.6 <br /> > 20 . . . . . . . . . . . . . . . . 1.00 0 .18 <br /> GRASS BUFFER STRIPS TO FILTER SEDIMENT LADEN SHEET FLOWS <br /> Strips must be at least 125 feet wide and have a ground <br /> cover value of 50% or greater, otherwise P-Factor = 1 . 00 . <br /> AaGin Sloe <br /> 0% to 10% . . . . . . . . . . . . . . . 1. 00 0 . 60 <br /> 10% to 24%. . . . . . . . . . . . . . . 1 . 00 0 .80 <br /> NOTE: Use of other C-Factor of -Factor values reported in this <br /> table should be substantiated by documentation <br /> C-FACTOR VALUESESTABLISHED <br /> BASS AND GROUND COVER <br /> 0.40 <br /> C-FACTOR <br /> 0.35 <br /> 0.30 <br /> 0.25 - <br /> 0.20 - <br /> 0.15 <br /> .250.200.15 <br /> 0.00 <br /> 0 10 20 30 40 60 0SO g0 100 <br /> ESTABLISHED GRA COVER M <br /> ®ROUND COVER REPRESENTS THE PORTION OF <br /> TOTAL SOIL SURFACE AREA OCCUPIED BY <br /> GRASS WHEN VIEWED FROM ABOVE <br /> Figure 9 : C-Factors for Established Grass (from HDI, Jan, 1991) . <br />