Blue Lake Dam Okanogan Co is a rockfill dam located in Okanogan County, Washington, built in 1923. It carries a Low hazard potential classification.
Dam profile
NID height · 32 ft32 ft tall and 1,500 ft long, taller than 74% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic rockfill embankment section and the water level is illustrative.
About Blue Lake Dam Okanogan Co
The primary purpose of Blue Lake Dam Okanogan Co is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Wa Dfw (state). It impounds the Tr-sinlahekin Creek near Loomis.
The dam stands 32 feet tall and stretches 1,500 feet across, creates a reservoir covering 160 acres, has a maximum storage capacity of 4,416 acre-feet, and collects water from a drainage area of 10 square miles. Completed in 1923, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | Washington |
| County | Okanogan |
| Nearest City | Loomis |
| River/Stream | Tr-sinlahekin Creek |
| Coordinates | 48.69214, -119.69044 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 32 ft |
| Dam Length | 1,500 ft |
| Year Completed | 1923 (103 years old) |
Storage & Hydraulics
| NID Storage | 4,416 acre-ft |
| Max Storage | 4,416 acre-ft |
| Normal Storage | 4,416 acre-ft |
| Surface Area | 160 acres |
| Drainage Area | 10 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Wa Dfw |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00325 |
| Federal ID | WA00325 |
| More Info | State Dam Safety Program |