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<br />Table 18. Total sediment yield and sand delivery from ungaged tributaries of the Colorado River In Grand <br />Canyon, Arizona. <br /> MaxImum volume Amount contributed Average volume Amount contributed <br />Sedlment- model by debris tlows mOdel by debris flows <br />r""d reech RIver miles (10a Mg/yr) (%) (10a Mgiyr) (%) <br /> TOTAL SEDIMENT YIELD <br /> A -15.5 to 0.9 0.065 0 0.065 0 <br /> B 0.9 to 61.5 0.691 12 0.648 6 <br /> C 61.5 to 87.8 0.127 23 0.112 \3 <br /> D 87.8 to 143.5 0.381 13 0.356 7 <br /> E 143.5 to 156.8 0.062 9 0.059 4 <br /> F 156.8 to 225.8 0.893 8 0.855 4 <br />G 225.8 to 276.0 0.728 8 0.698 4 <br /> A II Reaches 2.947 10 2.793 5 <br /> Amount In Amount In Amountln <br />Sedlment- Low debris flows Maximum debris 1I0Wll Average debris tlows <br />yield reech River mllee (10' Mg/yr) (%) (10. Mg/yr) ('%) (10" Mg/yr) (%) <br /> SAND YIELD FROM FULLY REWORKED DEBRIS FANS <br />A -15.5 to 0.9 0.010 0.0 0.049 0.0 0.030 0.0 <br />B 0.9 to 61.5 0.098 \.5 0.472 13.8 0.296 5.4 <br />c 61.5 to 87.8 0.017 3.5 0.079 26.9 0.050 11.2 <br />D 87.8 to 143.5 0.054 1.7 0.258 15.4 0.162 6.1 <br />E 143.5 to 156.8 0.009 1.1 0.044 10.1 0.027 3.9 <br />F 156.8 to 225.8 0.129 1.0 0.629 9.6 0.393 3.7 <br />G 225.8 to 276.0 0.\06 1.0 0.513 9.6 0.320 3.7 <br /> All Reaches 0.423 1.3 2.043 11.9 1.277 4.6 <br /> SAND YIELD FROM PARTIALLY REWORKED DEBRIS FANS <br />A -15.5 to 0.9 0.010 0.0 0.049 0.0 0.030 0.0 <br />B 0.9 to 61.5 0.093 0.4 0.462 3.8 0.288 1.4 <br />C 6 \.5 to 87.8 0.015 0.9 0.075 8.4 0.047 3.2 <br />D 87.8 to 143.5 0.051 0.4 0.251 4.4 0.156 1.6 <br />E 143.5 to 156.8 0.009 0.3 0.043 2.7 0.027 1.0 <br />F 156.8 to 225.8 0.125 0.3 0.619 2.6 0.385 1.0 <br />G 225.8 to 276.0 0.102 0.3 0.505 2.6 0.314 1.0 <br /> All Reaches 0.404 0.3 2.002 3.3 1.247 1.2 <br /> <br />36 Sediment Delivery by Ungeged Trlbuterles of the Coloredo River In Grend Cenyon <br />