Santiago Dam
| Santiago Dam | |
|---|---|
Santiago Dam, viewed from the eastern end of the lake | |
| Country | United States |
| Location | Orange County, California |
| Coordinates | 33°47′10″N 117°43′31″W / 33.78611°N 117.72528°W |
| Construction began | 1929 (Irvine Company, Serrano Irrigation District) |
| Opening date | 1931 |
| Owner(s) | Serrano Water District/Irvine Ranch Water District |
| Dam and spillways | |
| Type of dam | Roller-compacted earth and rock fill |
| Impounds | Santiago Creek |
| Height | 136 ft (41 m) |
| Length | 1,425 ft (434 m) |
| Width (crest) | 29 ft (8.8 m) |
| Width (base) | 760 ft (230 m) |
| Dam volume | 790,000 cu yd (600,000 m3) |
| Spillway type | Uncontrolled concrete overflow |
| Spillway capacity | 31,700 cu ft/s (900 m3/s) |
| Reservoir | |
| Creates | Irvine Lake |
| Total capacity | 38,800 acre⋅ft (47,900,000 m3) (max) 25,000 acre⋅ft (31,000,000 m3) (conservation) |
| Catchment area | 64 sq mi (170 km2) |
| Surface area | 700 acres (280 ha) |
| Power Station | |
| Hydraulic head | 120 ft (37 m) |
| Installed capacity | None |
Santiago Dam (also known as Santiago Creek Dam) is an earth/rockfill dam across Santiago Creek in Orange County, in the U.S. state of California, forming Irvine Lake. The 136-foot (41 m) earth dam and its reservoir serve for flood control and recreational purposes. It lies upstream (southeast) from the city of Orange and north of Irvine. Irvine Lake is the largest body of fresh water entirely in Orange County.