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<br /> <br />July 1996 CYVCC -Sediment Yield Demonstration Rev.1- Block C 18 <br />3.0 RESULTS <br />The following are the inputs and results fora 10-year, 24-hour storm event: <br />BLOCK C SEDIMENT YIELD DEMONSTRATION <br />UVPUTS AND RESULTS <br /> <br />Tc Runoff Peak <br />Slope <br />Avg. Sediment <br />Area Size CN Volume Q K ~ yield <br /> rors) Length Slope <br /> ac-ft cfs tons <br />1 95.1 .171 74 2.l 16.4 .22 500 17 .003 3.4 <br />2 39.3 .184 74 0.9 6.6 .22 600 13 .003 1.0 <br />3 30.2 .197 74 0.7 4.9 .22 500 9 .003 0.3 <br />4 8.1 .037 74 0.2 2.3 .22 300 25 .003 0.3 <br />Total 172.7 5.0 <br />PASTURELAND REFERENCE AREA SEDIMENT YIELD DEMONSTRATION <br />INPUTS AND RESULTS <br /> Runoff Peale Sediment <br /> <br />Area Stu firs CN Volume Q K CP Yield <br /> ( <br />) Length lope <br /> ac-ft cfs tons <br />1 95.1 .771 74 2.l 16.4 .22 500 I7 .003 3.4 <br />2 39.3 .184 74 0.9 6.6 .22 600 13 .003 I.0 <br />3 30.20 .197 74 0.7 4.9 .22 500 9 .003 0.3 <br />4 8.1 .037 74 0.2 2.3 .22 300 25 .003 0.3 <br />Total 172.7 5.0 <br />The SEDCAD+computerpnntouts are included in Appendix A. <br />As shown by the SEDCAD+ results, the total sediment load calculated for Black C is the same as the <br />sediment load calculated for the reference area, indicating that sediment yield Gom Block C would <br />contribute the same amount of sediment as the comparable adjacent undisturbed pastureland area. <br />C. L9lSiBLI'CJULYREV <br />O]/IV~963 31vm kry TerraAfarrix /nc ' 165 South Union Boulevard. Suue 100 ' Lakewood. Colorado 80718 ' (303) 763-5/10 <br />