Overview
Lost Creek Dam is on Lost Creek, 12 miles upstream from its confluence with the Weber River. It impounds a reservoir with a total capacity of 22,510 acre-feet covering a surface area of 365 acres. A zoned earthfill structure 248 feet high with a crest length of 1,078 feet, the dam has a volume of 1,831,820 cubic yards. The uncontrolled spillway on the right abutment has a concrete-lined chute with a capacity of 2,455 cubic feet per second. The outlet works, with a capacity of 805 cubic feet per second, consists of an intake structure at the right abutment, a concrete-lined tunnel, a gate chamber for two 2.25-foot-square high-pressure gates, a concrete tunnel, and stilling basin.
General
| Project | Weber Basin |
| Longitude | -111.39918923377991 |
| Latitude | 41.184169080205045 |
| Watercourse | Lost Creek |
| Reservoir | Lost Creek |
| Original Construction | 1963-1966 |
| National ID Number | UT10125 |
Dimensions
| Crest Elevation | 6022.0 ft |
| Structural Height | 248.4 ft |
| Hydraulic Height (Normal Operating Depth at Dam) | 180.0 ft |
| Crest Length | 1078.0 ft |
| Top of Inactive Conservation Pool (Elevation) | 5912.3 ft |
| Volume of Dam Construction Materials | 1,831,820 cu. yards |
| Top of Dead Storage Pool (Elevation) | 5842.0 ft |
| Streambed at Dam Axis | 5835.0 ft |
| Top of Active Conservation Pool (Elevation) | 6005.0 ft |
| Spillway Crest Elevation | 6005.0 ft |
Hydraulics & Hydrology
| Auxiliary Spillway | No |
| Outlet Works Capacity at Elevation | 805 cfs at 6015.9 ft |
| Drainage Area | 123.0 sq mi |
| Hydrometeorological Report (HMR) | HMR 49 |
| Maximum Water Surface Elevation | 6015.9 ft |
| Spillway Capacity at Elevation | 2455 cfs at 6015.9 ft |
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