Nelson #2
Key Takeaway
Nelson #2 is classified as low hazard in Montana. It was completed in 1960 and is 66 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 15 ft (taller than 18.8% in MT) |
| Dam Length | 1,700 ft |
| Dam Type | Earth |
| Max Storage | 83 acre-ft |
| Normal Storage | 33 acre-ft |
| Drainage Area | 4 sq mi |
| Max Discharge | 800 cfs |
| Year Completed | 1960 (66 years old) |
| NID ID | MT01553 |
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
LYLE E NELSON
Private
Nearby Dams
Nelson #1
McCone, MT
Significant Hazard 20 ftLyle Nelson #7
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Low Hazard 14 ftLyle Nelson #8
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Low Hazard 20 ftNomland Dam
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Low Hazard 16 ftThora #2
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Low Hazard 17 ftNelson Reservoir #2
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Low Hazard 15 ftJohn Ball Reservoir
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Significant Hazard 16 ftLyle Nelson #6
McCone, MT
Low Hazard 14 ftFrequently Asked Questions
What is the hazard classification of Nelson #2?
Nelson #2 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 Nelson #2?
Nelson #2 is owned by LYLE E NELSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Nelson #2 built?
Nelson #2 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 Nelson #2?
Nelson #2 serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Nelson #2?
Nelson #2 has a dam height of 15 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.