Gregory Dam 4147
Key Takeaway
Gregory Dam 4147 is classified as low hazard in Nebraska. It was completed in 1960 and is 66 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 22 ft (taller than 35.8% in NE) |
| Dam Length | 715 ft |
| Dam Type | Earth |
| Max Storage | 71 acre-ft |
| Normal Storage | 3 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1960 (66 years old) |
| NID ID | NE04147 |
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
James E Gregory
Private
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Low Hazard 18 ftFrequently Asked Questions
What is the hazard classification of Gregory Dam 4147?
Gregory Dam 4147 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 Gregory Dam 4147?
Gregory Dam 4147 is owned by James E Gregory (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Gregory Dam 4147 built?
Gregory Dam 4147 was completed in 1960, making it 66 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 Gregory Dam 4147?
Gregory Dam 4147 serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Gregory Dam 4147?
Gregory Dam 4147 has a dam height of 22 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 Gregory Dam 4147 last inspected?
Gregory Dam 4147 was last inspected on October 3, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.