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<br />D, <br /> <br /> <br />E. <br /> <br /> <br />c <br /> <br />Figure B3-Continued. The Number 4 Gage and the high.waters mark from the 1921 flood,lDI October 2.1921. view of the inclined upper <br />sections of the Number 4 Gage. Analysis of figs. 81 D, 3A. and 3Bindicates that the peak stage of the June 1921 flood was at about the elevation <br />of the road in this photograph. This elevation equals a stage of 27 feet on the Number 4 Gage, which equals an elevation of 3.133.9 feet above <br />the NGV01929, (t) May 25. 1999, view ofthe remnants of the inclined portion ofthe Number 4 Gage Photograph taken by OJ Topping IU,S, <br />Geological Surveyl <br /> <br />October 12, 1925 <br /> <br />Cable Gage reconstructed and remarked. Datum of gage was lowered 10ft. New datum of <br />the Cable Gage was 3,099.40 ft above the NGYDI929. <br /> <br />Backwatered flow conditions develop in the Colorado River at the Lees Ferry Gage as a <br />result of a large flood on the Paria River, The stage of the Colorado River at the Lees Ferry <br />Gage increased by as much as I ft as a result of the Paria River llood entering the Colorado <br />River just downstream from the gage. Backwatered llow conditions lasted 2 hours before an <br />increase in the discharge of the Colorado River increased the stage above II ft at the Lees <br />Ferry Gage. <br /> <br />Floating logs tore out vertical low-water section of the Number I Gage, Gage useless below <br />13.5 ft. <br /> <br />October 12, 1924 <br /> <br />October 5, 1925 <br /> <br />October 19,1925 <br /> <br />Last stage measurement made at the Number I Gage at 6:00 a.m, <br /> <br /> <br />. , .. . <br /> <br />. t "'.. '.~ <br />76 Computation and Anal~is of the Instantaneous-Discharge Record for the Colorado River at Lees Ferry, Arizona-MaV 8. 1921. through September 30. 2000 <br />