Hetch Hetchy Reservoir
| Reservoir Name | Hetch Hetchy Reservoir |
| Dam Name | O'Shaughnessy |
| River | Tuolumne River |
| Administration City | California |
| Country | United States |
| Year | 1923 |
| Dam Height | 95 |
| Dam Length | 274 |
| Area(Sqkm) | 6.8 |
| Area(Polygonal) | 6.8 |
| Capital Expenditure | 444.1 |
| Depth(M) | 65.3 |
| Avg Displacement Of Water | 11251 |
| Catchment Area In Sqkm | 1181 |
| Main Usage | Water supply |
| Status | 2: Good |
| Longitude | -119.787917 |
| Latitude | 37.949583 |
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