Coffin Sheep Dam No 3
Coffin Sheep Dam No 3 is an earth dam located in Benton County, Washington, built in 1938. It carries a Low hazard potential classification.
About Coffin Sheep Dam No 3
The primary purpose of Coffin Sheep Dam No 3 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by K2h Farms (private). It impounds the Four Mile Creek.
The dam stands 31 feet tall and stretches 430 feet across, has a maximum storage capacity of 104 acre-feet, and collects water from a drainage area of 42 square miles. Completed in 1938, 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.
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Location
| State | Washington |
| County | Benton |
| River/Stream | Four Mile Creek |
| Coordinates | 46.00485, -119.25279 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Length | 430 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 104 acre-ft |
| Max Storage | 104 acre-ft |
| Drainage Area | 42 sq mi |
Ownership & Safety
| Purpose | Irrigation |
| Owner | K2H Farms |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00028 |
| Federal ID | WA00028 |
| More Info | State Dam Safety Program |