Mason Nelms Dam
Key Takeaway
Mason Nelms Dam is classified as low hazard in Nebraska. It was completed in 1980 and is 46 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 19 ft (taller than 24.6% in NE) |
| Dam Length | 220 ft |
| Dam Type | Earth |
| Max Storage | 119 acre-ft |
| Normal Storage | 37 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1980 (46 years old) |
| NID ID | NE03468 |
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
Mason A. & Kalli C. Nelms
Private
Nearby Dams
Winters Dam
Red Willow, NE
Low Hazard 20 ftMestl South Lagoon Dam
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Low Hazard 15 ftSchaffert Dam
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Low Hazard 15 ftDry Creek 8-C
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Significant Hazard 27 ftTeter Dam
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Low Hazard 21 ftQuigley Dam
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Low Hazard 11 ftDry Creek 8-B
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Low Hazard 29 ftFrequently Asked Questions
What is the hazard classification of Mason Nelms Dam?
Mason Nelms 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 Mason Nelms Dam?
Mason Nelms Dam is owned by Mason A. & Kalli C. Nelms (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mason Nelms Dam built?
Mason Nelms Dam was completed in 1980, making it 46 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 Mason Nelms Dam?
Mason Nelms Dam 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 Mason Nelms Dam?
Mason Nelms Dam has a dam height of 19 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 Mason Nelms Dam last inspected?
Mason Nelms Dam was last inspected on November 22, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.