OCR Text |
Show resulting from eddies and ( 142 1,42 ) backwater . . The material , ( making inaking ) up these bars is so fine that their surfaces , can be seen to be in constant motion . The particles shift and move around with the smallest ( disturb disturb- disturb ) ances in the water . The material in these bars is so fine that the pressure of the little finger was frequently sufficient to sink out of sight the ( 8-foot 8foot ) sounding rod which was ( one-half onehalf ) inch in diameter . It is clearly evident that these portions of the river bed are , accurately speaking , in a constant state of change caused by all changes in velocity due either to change in stage or ripples and waves caused by wind . The sand bars which lie between 4 and 6 feet above the water are apparently formed during ( ordi- ordi ) nary floods . Between such floods they are subject to minor changes as a result of the gradual washing away of their edges where exposed to the current , , the gradual building along their downstream slopes , and surface changes resulting from wind movement . . It is ( Hoyt's Hoyts ) conclusion that ( Compl . Exhibit 75 , page 67 ) many of the changes occurring at the ( cross- cross ) ing bars during low and medium stages are a result ( of' of ) the gradual wearing away of these low bars . The . formation of the higher ( willow-covered willowcovered ) bars or , benches is not so easily ( anatyzed analyzed ) . These bars ( or- or ) benches , which extend probably for ( one-half onehalf ) the ( dis- dis ) tance through the canyon , form the flood channel limits for all except the most extraordinary floods . . It is evident that they are composed of sediment brought into the canyon section , and their height |