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<br />June 24, 1921
<br />
<br />June 25, 1921
<br />June 25, 1921
<br />
<br />June 28, 1921
<br />
<br />July 7, 1921
<br />
<br />July 25, 192]
<br />
<br />August 3,192]
<br />
<br />August 3, 1921
<br />August 5,192]
<br />
<br />August 9, 1921
<br />August 11, 1921
<br />August 14, 1921
<br />September ] 9, ] 921
<br />
<br />Septembcr 2l, 1921
<br />
<br />Number 1 Gagc was probably 2.65 ft lower than that for the LaRue Gage. Based on
<br />information presented in Appendix D, the reference point for the Number I Gage was most
<br />likely about 3.65 ft lower than that for the LaRue Gage.
<br />
<br />Due to the high velocities encountered at Lees Feny during the snowmelt flood, the decision
<br />was made to use heavier lead weights than normal when making discharge measurements,
<br />One lOO-pound weight and one 50-pound torpedo-shaped weight were thus ordered from
<br />W. and L.B. Gurley, Troy, New York. At that time, the USGS only had wcights lighter than
<br />30 pounds in stock. Also, a special winch was dcsigned to handle the heavier weights.
<br />Becausc of the heavier equipment, thc cable and cable car were also designed to be larger.
<br />
<br />First reading on the ncw Numbcr 1 Gage made by Frank T, Johnson at 7 a.m.
<br />
<br />ES. Solberg of the Flagstaff Lumber Company informed Schenck and Rice that the woodcn
<br />A-frame for the Upper Cableway would be completcd by July 8, 1921.
<br />
<br />Temporary inclined staff gage installed on the right bank just above the ferry crossing (fig.
<br />lC), This gage was known as the "Number 2 Gage" and had a slope of 24020', The first stage
<br />measurement on this gage was made at 4:30 a,m, The Number 2 Gage was read twice daily
<br />until 6:00 a,m, on August 11, when it was ordered rcmoved by B.c, LaRue, The datum of
<br />this gage was never tied into the datums of the othcr gages.
<br />
<br />Temporary inclined staff gage installed on the left bank near the large rock below the Upper
<br />Cableway site. This gage was known as the "Number 3 Gage" and was at the site of the
<br />higher-water inclined sections of the future "Number 4 Gage" (fig, lC). The first stage
<br />measurement on this gage was made at 7:45 a.m. The Number 3 Gage was read twice daily
<br />until 9:05 a.m. on August] 1, when it was ordered removed by B.C, LaRuc, The datum of
<br />this gage was never tied into the datums of the other gages,
<br />
<br />Southern California Edison Company began construction of the Upper Cablcway for
<br />measuring discharge.
<br />
<br />Tcmporary inclined staff gage installed on the left bank near thc Numbcr 3 Gage. This gagc
<br />was first read at 6: 10 a.m, and became known as the "Number 4 Gage" (fig, I C).
<br />
<br />First discharge measurement made 1rom the Upper Cablcway,
<br />
<br />Tcmporary inclined staff gage installed at the end of the dugway (Hg, 1 C), This gage became
<br />known as the "Dugway Gage" and was located immcdiately upstream from thc future
<br />permanent Lees Ferry Gage, The datum of the Dugway Gage was thc same as the future
<br />Lees Ferry Gage.
<br />
<br />W,E. Johnson rcplaced Frank T. Johnson as thc gage observer.
<br />
<br />Number 2 and Number 3 Gages ordered removed by E,C, LaRuc,
<br />
<br />First dependable stage measurement madc at the Dugway Gage at 8:50 a.m.
<br />
<br />Eyebolt failed on Upper Cableway and cable car fell in river at 3:00 p,m, with I.G. Cockcroft
<br />and Elmer Johnson aboard. Cockcroft and Johnson swam to shorc. Johnson was not a strong
<br />swim~r Jlnd used the car top as a life preservcr.
<br />
<br />Cable reawichS'd.JU1d cable car placed back on cable (fig. B]). Discharge measurements
<br />were liotmade)rom the cable again until December 3, 1921. Discharge from October 4
<br />through Novcmber 30 was measured from a boat at the Upper Cableway cross-scction,
<br />
<br />-, .. ,~
<br />
<br />"
<br />68 Computation and Analysis of the Instantaneous-Drscharge Record for the Colorado River at Lees Ferry, Arizona-Mav 8, 1921, through September 30. 2000
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