Moses Lake North Dam is a gravity dam located in Grant County, Washington, built in 1930. It carries a Low hazard potential classification.
Dam profile
NID height · 19 ft19 ft tall and 88 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 Moses Lake North Dam
The primary purpose of Moses Lake North Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Moses Lake Irrigation Dist. (public utility). It impounds the Crab Creek near Smyrna.
The dam stands 19 feet tall and stretches 88 feet across, creates a reservoir covering 6,800 acres, has a maximum storage capacity of 50,000 acre-feet, and collects water from a drainage area of 3,080 square miles. Completed in 1930, 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. An emergency action plan is in place for this dam.
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Location
| State | Washington |
| County | Grant |
| Nearest City | Smyrna |
| River/Stream | Crab Creek |
| Coordinates | 47.08393, -119.33354 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 19 ft |
| Dam Length | 88 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 50,000 acre-ft |
| Max Storage | 50,000 acre-ft |
| Normal Storage | 50,000 acre-ft |
| Surface Area | 6,800 acres |
| Drainage Area | 3,080 sq mi |
| Max Discharge | 500 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Moses Lake Irrigation Dist. |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WA00129 |
| Federal ID | WA00129 |
| More Info | State Dam Safety Program |