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I I I I I I I I I I I I I I I I I I I house and concrete gage where foot traffic is heavy. Debris on the upstream face is 1 imited to an occasi onal pi ece of dri ftwood. No major vegetati ve growth is present on the face wi th the excepti on of several small seedl i ngs near the left abutment. These should be removed as part of a regular maintenance program. 1.2.4 Downstream Face The downstream slope of the dam appears to be uniform at 2H to 1 V. been protected from erosion by a grass cover. However, the grass sparse in some areas owi ng to the inert nature of the under1yi ng gravel. Numerous erosion rivulets exist on the downstream face maximum section of the dam. It has cover is sand and nea r the Duri ng the si te i nspecti on, City personnel menti oned that two hori zontal rows of willow bushes used to be well defined along the downstream face. However, over the past several years, the growth has diminished and the feature is not as obvious. This is most likely due to a reduction in the phreatic surface in the dam resulting from the toe drain installation. Several small seed1 i ngs exi st near the 1 eft abutment and shoul d be removed under the regular maintenance program. 1.3 Outlet Works Releases from the reservoir are made through a 2.5 feet wide by 3.0 feet high concrete arch outlet conduit that discharges into a stilling basin at the maximum dam section. Releases through the outlet conduit are controlled by an intake structure at the upstream end. The intake structure rests on the upstream slope of the dam and contains three separate gated inlets at elevations 9247.0, 9257.0, and 9261.5. From the concrete stilling basin, flows pass through a 5-foot diameter corrugated metal culvert under Colorado Hi ghway 14 and empty into Joe Wri ght Creek. The outl et condui t and still i n9 basin structure were repaired by the City in 1986 and are in fair condition. A crawl-through inspection of the outlet conduit by MKE personnel revealed 1231 H -41-