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r. <br />F-+ of precipitation record "1909 -49. Flood - control regulation is also provided <br />by Fort Supply Reservoir (capacity, 107,500 acre -feet at spillway crest) <br />on the tributary Wolf Creek, controlling flow from 14 percent of the <br />drainage area of the main stream above Canton. <br />A characteristic of the stream is the occurrence of large channel <br />losses in the entire reach above El Reno, Oklahoma. <br />At Oklahoma City diversions of flow are made to Lake Overholser and <br />Lake Hefner (combined capacity, 96,000 acre -feet) for municipal water <br />supply. The stream is subject to pollution from oilfield brines and is <br />too highly mineralized in the lower basin for any general use until <br />corrective measures are applied. <br />2 -7 <br />