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<br />. <br /> <br />. <br /> <br />. <br /> <br /> <br />r <br /> <br />Projcct ()escription <br /> <br />This 5600,000 project involved seepage improvements along the upper ponion of the dam, <br />located wesl of Longment in Boulder County. The existing darn was improved in 2002 to address <br />an inadequate spillway and severe seepage through the lower embankment. These improvements <br />included a new spillway. a sand filter blanket along the downstream face oCthe dam, a perimeter <br />loe drain with now measuring devices. rip rap placement along the upstream face of the dam, and <br />rcconstmction of the dam crest. Upon filling the reservoir above gauge height 39, \vhich had not <br />occurred since the 1970's, excessive seepage occurred along the upper portion of the dam. This <br />project involved the construction of a clay core trench along the upper 15.fcct of the dam for <br />approximately 800-fect, to correct this problem. <br /> <br />"roied U1IIa <br /> <br />SlluU\or: Highland Ditch Company Counly: Boulder Waler Source: S1. Vrain River <br /> <br />Terms of I.olm: S517.364.8J@2.25% for 20-years Suh\lllfilial Completion Dale: Feb.I,2oo7 <br /> <br />Design Engineer: Smith Geotechnical, Inc. - Fort Collins, Color..lIJo <br /> <br />Conslruclion Coulrnclor: Zak Din. Inc. - Longmont, CoIomdo <br /> <br />AHn'ge Annual Uiversion: 32.550 acre-fl. <br />