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Show At Greenriver , Utah , 974 the Green River carried a total of 50,700,000 tons for that year . ( R . 3802 . ) He believes that 50,700,000 tons of solid material were carried in the Green River for the year ending September 30 , 1929 . ( R . 3802-3803 . ) This ( calcula- calcula ) tion is based on observations of silt and discharge . The ( method mettiod ) of calculation of the solid content of the stream is subject to error , and in calculating this ( dis- dis ) charge he did not make allowance for errors . Where the discharge of silt in the stream is constant , or nearly so , the error is rather small . Under other conditions , or where there is considerable fluctuation , ( the -the the ) error may be large , but the ( methods raethods ) used in ( com- com ) putation are recognized by the Geological Survey to be the proper method of making such calculations . , ( R . 3803-3805 . ) The figures for the same year at Cisco , Utah , show a load of 25,000,000 tons , and the San Juan River at the Goodrich Gauging Station from the period of May 1 to September 1 , computed for yearly load , is 60,200,000 tons . ( R . 3805 ) . At Lees Ferry , for the . same period , the load was 131,000,000 tons . . ( R . . 3805-3806 . ) It is about the same as the total for the three stations . He believes it ( may rnay ) be about 4,000,000 or 5,000,000 tons less ; but ( approximately approxirnately ) it is the same load as comes in from the three upper stations . There is no particular reason why it should be the same for that given period . The load , , as it passes Greenriver , does not go instantaneously past the junction of the Green and the Colorado Rivers , , or past the Lees Ferry Station . Now , it might be |
