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I I I I I I I I I I I I I I I I I I I CHAPTER V: PLAN OF DEVELOPMENT 1.0 SITE INSPECTIONS 1.1 General Barnes Meadow Dam and Reservoir were inspected on July 20, 1987 by representatives of MKE, the City of Greeley, and the U.S. Forest Service. Following the inspection, a Phase I inspection check list, similar to that used by the State Engineer's Office, was completed. A copy of this inspection report is included in Appendix A. At the time of the inspection, the reservoir was at gage height (G.H.) 36.2, approximately five feet below the service spillway crest elevation and eleven feet below the embankment crest. The crest of the service spillway corresponds to true G.H. 40 (elevation 9,087 M.S.L.). However, when the reservoir water surface is at the service spillway crest, the gage at the dam reads 41 due to an error during installation of the concrete measuring rod. The crest elevation of the dam ranges between approximately 9092.5 and 9093.9, providing roughly 5.5 feet of normal freeboard at the lowest point. 1.2 Embankment Dam 1.2.1 Description Barnes Meadow Dam is a rolled earthfil1 structure with a maximum height of 51 feet and a crest length of 1,260 feet. The 20-foot wide crest was designed to be at elevation 9093.6. Surveying conducted during the site inspection indicated that the crest elevation ranges from about 9092.5 to 9093.9, with an average of approximately 9093.2. The embankment consists of a fairly homogeneous mixture of medium dense to dense, silty sand with gravel, cobbles, and occasional boulders. The downstream slope is 2H to 1V and grass covered for erosion protection. A rockfil1 toe was incorporated downstream apparently to enhance stabil i ty and provi de a free-drai ni ng zone. The upstream slope is 3H to 1V and is protected with riprap. Foundation seepage control was 1231 H -38-