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<br />Table 20 - Amounts of Sediment and Salt Contributed <br />Annually to the Colorado River by Erosion <br />in the Grand Valley Unit <br /> <br /> S hee t , Ri 11, Gully and Higher Streambanks TOTALS <br /> lower Streambanks <br /> Bank <br /> Contributing Area Yield Length Yield <br /> Area (sq.",i. ) Sediment Salt (Hi les) Sediment Salt Setiiment Salt <br /> -----tons------ -----tons------ -----tons------- <br /> Salt Desert 282 1,014,900 27,900 117 271,800 1-0 ,900 1,285,700 38,800 <br /> North tributaries 498 557,800 11,100 97 299,500 12,000 857,300 23,100 <br />Vl <br />N I rrigated and <br /> Urban Areas 194 86,900 2,600 70 162,100 6,500 249,000 9,100 <br /> South tributaries 396 354,800 7,100 80 123,500 2,400 478,300 9,500 <br /> TOTALS 1,370 2,Ol4,400 48,700 364 856,900 31,800 2,871,300 80,500 <br /> ,~;,. <br /> ':~i . <br /> I U." <br /> ".";' .~ ~, <br /> ,": " <br />