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<br />Derby's recommendations were adopted, and the following year, <br />1851, saw the beginning of a regular freighter service on the river by <br />George A. Johnson. Subsequently, in 1857, Lieutenant Ives was ordered <br />to explore the Colorado to determine the absolute head of navigation. <br /> <br />So much for some of the highlights of the Corps' early interest in <br /> <br />the Colorado River. <br /> <br />Supplementing reports given to you in years past, I want to bring <br />you up to date by giving a brief report on our activities during the past <br />year. <br /> <br />1. Pine Canyon and Mathews Canyon Dams in Nevada are now <br />completed and in operation. These two structures will provide an appre- <br />ciable degree of protection to properties subject to flood damage in Meadow <br />Valley Wash and lower Muddy River, including 84 miles of main-line track <br />of the Union Pacific railroad. <br /> <br />2. Construction of Painted Rock Dam on the Gila River in Arizona <br />is on schedule and is about 35 percent complete. Closure of the dam is <br />now expected in April 1959 and completion in June 1960. <br /> <br />3. A draft of the General Design Memorandum has been completed <br />on Whitlow Ranch Dam on Queen Creek in Arizona. Construction of this <br />dam is presently scheduled for advertising early in 1959 with completion <br />tentatively scheduled for the fall of 1960. <br /> <br />4. We hope to have planning funds made available in the near future <br />to enable us to resum e our planning for construction of Alamo Dam on the <br />Bill Williams River in Arizona. <br /> <br />5. We have nine flood-control investigations funded in the Colorado <br />River Basin this year. These are on (a) Las Vegas Wash, Nevada, (b), <br />Animas River, Colorado and New Mexico, (c) Colorado River and Tribu- <br />taries above Lee Ferry, Arizona, (d) Dolores River, Colorado, (e) Gila <br />River below Painted Rock Reservoir, Arizona, (f) Pinal Creek and Tribu- <br />taries, Arizona, (g) New River, Arizona, (h) Santa Rosa Wash, Arizona, <br />and (i) Little Colorado River at Winslow, Arizona. <br /> <br />6. We are actively cooperating with the Bureau of Reclamation, <br />the Soil Conservation Service., and the Bureau of Land Management on their <br />studies in the basin. Particular emphasis is being placed on our studies of <br />flood control aspects of the Colorado River Storage Project in the upper <br />basin. <br /> <br />We fully expect our future interests in the Colorado River Basin <br />to prove greater than our past or present activities. As the economy of <br /> <br />- 11 - <br />