Alkali Lake
Alkali Lake is a rockfill dam located in Grant County, Washington, built in 1950. It carries a Low hazard potential classification.
About Alkali Lake
The primary purpose of Alkali Lake 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-columbia Rive near Soap Lake.
The dam stands 12 feet tall and stretches 500 feet across, creates a reservoir covering 290 acres, has a maximum storage capacity of 2,449 acre-feet, and collects water from a drainage area of 79 square miles. Completed in 1950, the structure is well-established, with more than 75 years of service.
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. The most recent inspection on record was 05/01/1998. That was over 27 years ago.
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Location
| State | Washington |
| County | Grant |
| Nearest City | Soap Lake |
| River/Stream | Tr-columbia Rive |
| Coordinates | 47.51619, -119.50135 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 12 ft |
| Dam Length | 500 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 2,449 acre-ft |
| Max Storage | 2,449 acre-ft |
| Normal Storage | 2,000 acre-ft |
| Surface Area | 290 acres |
| Drainage Area | 79 sq mi |
| Max Discharge | 110 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | WA DFW |
| Owner Type | State |
| Hazard Classification | Low |
| Last Inspection | 05/01/1998 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00314 |
| Federal ID | WA00314 |
| More Info | State Dam Safety Program |