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<br />. <br /> <br />COLORADO WATER CONSERVATION BOARD <br />823 State Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br /> <br />November 1981 <br /> <br />FOSSIL CREEK DAM <br /> <br />INTRODUCTION <br /> <br />Fossil Creek Dam is located just west of Interstate 25 <br />approximately 2 miles south of the city limits of Fort Collins, <br />Colorado. It is owned and operated by the North poudre <br /> <br />Irrigation Company, which serves irrigators primarily in the <br /> <br />Wellington, Colorado area. It is an earth fill dam which was <br /> <br />constructed in 1902. It has a maximum height of 47 feet, a crest <br /> <br />length of 3,700 feet, and the reservoir behind the dam has a <br />storage capacity of 11,508 acre feet. The water from this <br />reservoir is used by the North poudre shareholders for <br /> <br />exchanges. These exchange rights have been in effect over the <br /> <br />years and they are protectd by a decree. <br /> <br />PROBLEM <br /> <br />The State Engineer's Office (SEO) has restricted the storage <br /> <br />behind Fossil Creek Dam to 7,705 acre feet (at a water depth of <br /> <br />31 feet) because the existing spillway will not pass the run-off <br /> <br />from the probable maximum flood (PMF). In addition to needing an <br /> <br />. <br /> <br />enlarged spillway, the dam also needs the front face reconstruc- <br /> <br />ted and riprapped, the outlet works reconstructed and the <br />