Pretty Rock Dam
Pretty Rock Dam is an earth dam located in Grant County, North Dakota, built in 1936. It carries a Low hazard potential classification and has a fair condition assessment.
About Pretty Rock Dam
The primary purpose of Pretty Rock Dam 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 Us Fish And Wildlife Service (federal). It impounds the Sheep Creek.
The dam stands 16 feet tall and stretches 1,188 feet across, creates a reservoir covering 147 acres, has a maximum storage capacity of 1,268 acre-feet, and collects water from a drainage area of 13 square miles. Completed in 1936, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 09/26/2017.
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Location
| State | North Dakota |
| County | Grant |
| River/Stream | Sheep Creek |
| Coordinates | 46.25167, -101.93667 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 1,188 ft |
| Year Completed | 1936 (90 years old) |
Storage & Hydraulics
| NID Storage | 1,268 acre-ft |
| Max Storage | 1,268 acre-ft |
| Normal Storage | 500 acre-ft |
| Surface Area | 147 acres |
| Drainage Area | 13 sq mi |
| Max Discharge | 2,184 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | US FISH AND WILDLIFE SERVICE |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 09/26/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ND00350 |
| Federal ID | ND00350 |
| More Info | State Dam Safety Program |