East Park Dam
| East Park Dam | |
|---|---|
Dam face | |
Interactive map of East Park Dam | |
| Country | United States |
| Location | California Central Valley |
| Purpose | Irrigation |
| Status | Operational |
| Construction began | 1908 |
| Opening date | 1910 |
| Built by | United States Bureau of Reclamation |
| Operator | Orland Unit Water Users' Association |
| Dam and spillways | |
| Type of dam | Arch-gravity dam |
| Impounds | Little Stony Creek |
| Height (foundation) | 139 feet (42 m) |
| Height (thalweg) | 90 feet (27 m) |
| Length | 266 feet (81 m) (crest) |
| Elevation at crest | 1,199 feet (365 m) |
| Width (crest) | 10 feet (3.0 m) |
| Dam volume | 12,400 cubic yards (9,500 m3) |
| Spillways | 2 sluice gates |
| Spillway capacity | 9,200 cubic feet per second (260 m3/s) |
| Reservoir | |
| Total capacity | 52,000 acre-feet (64,000 ML) |
| Catchment area | 1,820 acres (740 ha) |
| Source | |
East Park Dam is an agricultural irrigation dam and reservoir built by the United States Bureau of Reclamation, on Little Stony Creek, about 30 miles (48 km) southwest of Orland, California on the northern end of the California Central Valley.
The dam was completed in 1910. Its main structure is a curved, thick-arch concrete gravity dam, 92 feet (28 m) high, with two sluice gates. The control house is in the shape of a pagoda, and the spillway, about 2,000 feet (610 m) south of the dam on the western side of the reservoir, features an eccentric set of curved labyrinth-spillway fins. The reservoir has a storage capacity of 51,000 acre-feet (63,000,000 m3).
The California Office of Environmental Health Hazard Assessment (OEHHA) has developed an advisory for the East Park Reservoir based on mercury and PCBs found in fish caught from this water body. The advisory provides safe eating advice for species caught in the body of water.