Long Lake Nwr 7
Key Takeaway
Long Lake Nwr 7 is classified as low hazard in North Dakota. It was completed in 1943 and is 83 years old. Its primary use is fish and wildlife pond.
Physical Details
| Dam Height | 8 ft (taller than 6% in ND) |
| Dam Length | 4,000 ft |
| Dam Type | Earth |
| Max Storage | 106.2K acre-ft |
| Normal Storage | 56.6K acre-ft |
| Surface Area | 11,600 acres |
| Drainage Area | 6 sq mi |
| Year Completed | 1943 (83 years old) |
| Year Modified | 2001 |
| NID ID | ND00990 |
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
USFWS
Federal Government
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Low Hazard 9 ftFrequently Asked Questions
What is the hazard classification of Long Lake Nwr 7?
Long Lake Nwr 7 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 Long Lake Nwr 7?
Long Lake Nwr 7 is owned by USFWS (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Long Lake Nwr 7 built?
Long Lake Nwr 7 was completed in 1943, making it 83 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 Long Lake Nwr 7?
Long Lake Nwr 7 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 Long Lake Nwr 7?
Long Lake Nwr 7 has a dam height of 8 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 Long Lake Nwr 7 last inspected?
Long Lake Nwr 7 was last inspected on June 24, 2002. Inspection dates indicate when a formal review occurred, not the results of that inspection.