Crab Creek Flood Flat Water Control Structure is a concrete dam located in Grant County, Washington, built in 2024. It carries a Low hazard potential classification.
Dam profile
NID height · 11 ft11 ft tall and 23 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Crab Creek Flood Flat Water Control Structure
The primary purpose of Crab Creek Flood Flat Water Control Structure is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Wa Dfw (state). It impounds the Crab Creek.
The dam stands 11 feet tall and stretches 23 feet across, has a maximum storage capacity of 80 acre-feet, and collects water from a drainage area of 1,912 square miles. Completed in 2024, the structure is relatively new.
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 | Grant |
| River/Stream | Crab Creek |
| Coordinates | 47.34297, -119.38133 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 11 ft |
| Dam Length | 23 ft |
| Year Completed | 2024 (2 years old) |
Storage & Hydraulics
| NID Storage | 80 acre-ft |
| Max Storage | 80 acre-ft |
| Normal Storage | 17 acre-ft |
| Drainage Area | 1,912 sq mi |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Wa Dfw |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00790 |
| Federal ID | WA00790 |
| More Info | State Dam Safety Program |