OCR Text |
Show stretch of river in ( which wbicli ) 116 rapids are located . Since , the prevailing wind is from the southwest in this region and at times blows through the canyon section ( with itith ) terrific force , it is possible that a sail might provide sufficient force to counteract the ( down down- down ) '-- stream velocity ( Photo . 40a , Compl . Exh . 77 ) even in the rapids . Additional testimony showing velocities in Glen Canyon sufficient to retard upstream progress ( of of' of ) boats is shown by the record . ( 6 ' ) Variations of flow ( M . R . ( 85 S5 ) , Exception 25 ) Roughly speaking , over 35,000 observations ( of of' of ) ( daily 'daily daily ) flow have been ( made inade ) by the Geological Survey from 1895 to date on the Green , Colorado , and San Juan Rivers , at Lees Ferry and above . The results of these observations ( are -are are ) shown on Compl . Exhibits 89 to 98 . The actual daily variation in flow is shown graphically on plates making up Compl . Exhibit 79 and in tabular form in Compl . Exhibit 88 . It is obvious that in the brief only the high spots can be touched : 6Aurand ( Abs . R . , vol . 1 , p . 393 ) ; Clark ( Abs . R . , vol . 1 , p . 262 ) ; Clark ( Abs . R , vol . 1 , p . 495 ) ; Gerdine ( Abs . R . , vol 1 , p . 536 ) ; Edwards ( Abs . R . , vol . 1 , p . 572 ) ; ( McDonald N-IcDonald NIcDonald ) ( Abs . R . , vol . 1 , p . 608 ) ; Marrs ( Abs . R . , vol . 1 , p . ( G40 640 ) ) ; Freeman ( Abs . R . , vol . 1 , p . 671 ) ; Johnson Abs . R . , vol . 2 , p . 786 ) ; Bennett ( Abs . R . , vol . 2 , p . 832 ) ; Chaffin ( Abs . R . , vol . 2 , p . 846 ) . |