Bonaparte Lake Dam
Bonaparte Lake Dam is an earth dam located in Okanogan County, Washington, built in 1957. It carries a Low hazard potential classification.
About Bonaparte Lake Dam
The primary purpose of Bonaparte Lake Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Bonaparte Lake Water Users (private). It impounds the Bonaparte Creek.
The dam stands 9 feet tall and stretches 180 feet across, creates a reservoir covering 170 acres, has a maximum storage capacity of 995 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1957, the structure is well into its service life at over 50 years 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. The most recent inspection on record was 06/23/1971. That was over 54 years ago.
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Location
| State | Washington |
| County | Okanogan |
| River/Stream | Bonaparte Creek |
| Coordinates | 48.79249, -119.06168 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Length | 180 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 995 acre-ft |
| Max Storage | 995 acre-ft |
| Normal Storage | 535 acre-ft |
| Surface Area | 170 acres |
| Drainage Area | 6 sq mi |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Bonaparte Lake Water Users |
| Owner Type | Private |
| Hazard Classification | Low |
| Last Inspection | 06/23/1971 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00051 |
| Federal ID | WA00051 |
| More Info | State Dam Safety Program |