OCR Text |
Show 132 ( Abs . . R . . vol . 1 , p . 660 ) ; Johnson ( Abs . R . . vol . 2 , , p . . 1352 ) ; Palmer ( Abs . R . vol . . 2 , , p ) . 807 ) ; Miser ( Abs . R . vol . 2 , p . 948 ) ; Stabler ( Abs . . R . vol . 2 , p . . 1029 ) , all describe the shallow conditions at rapids and shoals . Testimony of both Dent and Hoyt showed that in ( silt-laden siltladen ) rivers , such as the ( Colo- Colo ) rado , Green , and San Juan , bars or shoals would form in straight stretches between the bends , , across which there might be no channel . That this is true of the rivers in question was amply shown by ( maii3r many ) competent witnesses . Dent noted frequent groundings a part of which were recorded as follows : Between North Wash and Lees Ferry in early September , 1929 , the boat he was using ran smoothly where depths were IX feet and greater and dragged at lower depths ( miles-134Y4,126 miles134Y4126 ) , 124 1081 / 46Y4136 , 2 ; . Silt and sediment ( M . 11 , pp . 81 , 82 , 88 , 89 . ( Exceptions Exceptioiis ) 23 , 30 ) 31 ) In discussing the formation and ( transportation Eransportation ) of silt and sediment in the Colorado and Green Rivers , , consideration must be given to the climatic and ( topo- topo ) graphic conditions existing in their basins . The ( re- re ) gion is distinctly ( arid and ) and therefore there is little plant life to act as a protective blanket to the surface . . Consequently , the precipitation , which often occurs in the form of heavy downpour , runs off rapidly and carries with it soil which later appears in the rivers as sediment . The extent of the erosive action of the water is evidenced by the fact that only remnants of the ( Colo- Colo ) |