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<br />north of the Arkansas River. It was first filed upon No- <br />vember 15, 1900, claiming a capacity of 11,400 acre- <br />feet, to be supplied annually from the Arkansas river <br />and from Horse Creek. During the \;vinter of 1901 and <br />1902 the reservoir was developed by making the nec- <br />essary outlet cut to tap the bottom of the basin, with <br />controlling gates and pipes, together VJith a feeder ca- <br />nal from Horse Creek about 5 miles long, and a divert- <br />ing weir across Horse Creek, The total expenditure on <br />this work was about 555,000.00. <br /> <br />After it had been decided to build the Storage Canal <br />from the river it was deemed advisable to increase the <br />capacity by building a lower dam or dike across the 10\".J- <br />est depression in the rim of the basin, and for that pur- <br />pose an additional filing was made, dated December <br />20:!'. 1907, claiming a capacity up to 26,887 acre-feet. <br />This dam was built and the reservoir is now filled to the <br />full capacity stated. The dike is about 12,000 feet long, <br />and 20 feet wide on top for 4.600 feet in the center, 14 <br />feet wide the remaining distance. It has an upstream <br />slope of 2 on 1 for part of its length, and 4 on 1 the <br />remainder. The maximum height is but 16 feet, the crest <br />being placed 5 feet above the spillway level. The bot- <br />tom of the outlet cut is 11 feet below the surface. The <br />upstream surface is covered with a slab of reinforced <br />concrete 4 to 5 inches thick as a protection against wave <br />erosion. The cost of this work has been 538,606.33, as <br />per the Continental Audit Company's report. <br /> <br />On March 1, 1910, the Company filed on a further ex- <br />tension on this reservoir, to maKe :!s ultimate capacity <br />48,990 acre-feet. giving an available depth on 27 feet. <br />The dam is to be raised 6.6 feet, making It 22.4 feet in <br /> <br />4" <br />