Overview
Joes Valley Dam is an earthfill dam 1,290,000 cubic yards in volume, 187 feet above streambed, and 750 feet long at the crest. The project provides for regulation of Seely Creek, a major tributary of Cottonwood Creek. The reservoir has a total capacity of 62,460 acre-feet and a surface area of 1,170 acres.
Water is released from storage flows on Seely Creek to Cottonwood Creek and the Cottonwood Creek-Huntington Canal, which heads at Swasey Diversion Dam.
Geology
The dam and its abutments are founded on the flat lying Blackhawk Formation that contains numerous lignite (coal) beds interlaced among the sandstones.
General
| Project | Emery County |
| Longitude | -111.26935958862304 |
| Latitude | 39.288475613983 |
| Watercourse | Seely Creek |
| Reservoir | Joes Valley |
| Original Construction | 1963-1966 |
| National ID Number | UT10124 |
Dimensions
| Crest Elevation | 7004 ft |
| Structural Height | 192 ft |
| Hydraulic Height (Normal Operating Depth at Dam) | 180.4 ft |
| Crest Length | 750 ft |
| Top of Active Conservation Pool (Elevation) | 6989.7 ft |
| Top of Inactive Conservation Pool (Elevation) | 6908.9 ft |
| Volume of Dam Construction Materials | 1,290,000 cu. yards |
| Top of Dead Storage Pool (Elevation) | 6866.5 ft |
| Streambed at Dam Axis | 6817.0 ft |
Hydraulics & Hydrology
| Spillway Capacity at Elevation | 5000 cfs at 6989.7 ft |
| Outlet Works Capacity at Elevation | 385 cfs at 6989.7 ft |
| Hydrometeorological Report (HMR) | HMR 49 |
| Maximum Water Surface Elevation | 6997.4 ft |
| Auxiliary Spillway | No |
| Drainage Area | 135 sq mi |
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