Overview
Completed in 1970, this rolled earth and rock-filled structure is 239 feet high and 1,511 feet long.
The water storage capacity is 226,500 acre-feet which is reserved by court decree for fishery enhancement, primarily for the spawning of the endangered cui-ui, along the Truckee River downstream from Derby Dam and facilities operation of the Pyramid Lake Fishway
The reservoir provides water primarily for fishery enhancement along the Truckee River and Pyramid Lake Fishway facilities operation.
The reservoir also provides flood control, recreation, a reservoir fishery and other fishery improvements on the main Truckee River, Little Truckee River, and Boca Reservoir.The dam is owned and operated by Reclamation and is part of the Washoe Project.
General
| Project | Washoe |
| Longitude | -120.1100 |
| Watercourse | Little Truckee R. |
| Reservoir | Little Truckee R. |
| Original Construction | 1966-1970 |
| National ID Number | CA10192 |
| Latitude | 39.1078 |
Dimensions
| Structural Height | 239.00 ft |
| Crest Length | 1511.00 ft |
| Top of Active Conservation Pool (Elevation) | 5946.10 ft |
| Top of Inactive Conservation Pool (Elevation) | 5802.30 ft |
| Spillway Crest Elevation | 5952.70 ft |
| Streambed at Dam Axis | 5738.00 ft |
| Crest Elevation | 5974.00 ft |
| Hydraulic Height (Normal Operating Depth at Dam) | 5946.10 ft |
| Top of Joint Use Pool (Elevation) | 5952.70 ft |
| Top of Dead Storage Pool (Elevation) | 5769.00 ft |
Hydraulics & Hydrology
| Spillway Capacity at Elevation | 3060 cfs at 5963.3 ft |
| Outlet Works Capacity at Elevation | 2740 cfs at 5963.3 ft |
| Drainage Area | 136.0 sq mi |
| Hydrometeorological Report (HMR) | HMR 36 |
| Normal Water Surface Elevation | 5946.10 ft |
| Auxiliary Spillway | No |
| Net Generation | 7,842,000 kWh |
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