Pretty Rock Dam
Key Takeaway
Pretty Rock Dam is classified as low hazard in North Dakota. It was completed in 1936 and is 90 years old. Its primary use is fish and wildlife pond.
Physical Details
| Dam Height | 16 ft (taller than 52.7% in ND) |
| Dam Length | 1,188 ft |
| Dam Type | Earth |
| Max Storage | 1.3K acre-ft |
| Normal Storage | 500 acre-ft |
| Surface Area | 147 acres |
| Drainage Area | 13 sq mi |
| Max Discharge | 2,184 cfs |
| Year Completed | 1936 (90 years old) |
| NID ID | ND00350 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
US FISH AND WILDLIFE SERVICE
Federal Government
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Low Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Pretty Rock Dam?
Pretty Rock Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Pretty Rock Dam?
Pretty Rock Dam is owned by US FISH AND WILDLIFE SERVICE (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pretty Rock Dam built?
Pretty Rock Dam was completed in 1936, making it 90 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Pretty Rock Dam?
Pretty Rock Dam serves the following purposes: Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Pretty Rock Dam?
Pretty Rock Dam has a dam height of 16 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Pretty Rock Dam last inspected?
Pretty Rock Dam was last inspected on September 26, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.