Pr-21 Ret. Dam./Whitewater Lake
Key Takeaway
Pr-21 Ret. Dam./Whitewater Lake is classified as low hazard in Montana. It was completed in 1939 and is 87 years old. Its primary use is fire protection.
Physical Details
| Dam Length | 1,444 ft |
| Dam Type | Gravity |
| Max Storage | 495 acre-ft |
| Normal Storage | 3 acre-ft |
| Surface Area | 291 acres |
| Drainage Area | 301 sq mi |
| Year Completed | 1939 (87 years old) |
| NID ID | MT03061 |
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
DOI BLM
Federal Government
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What is the hazard classification of Pr-21 Ret. Dam./Whitewater Lake?
Pr-21 Ret. Dam./Whitewater Lake 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 Pr-21 Ret. Dam./Whitewater Lake?
Pr-21 Ret. Dam./Whitewater Lake is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pr-21 Ret. Dam./Whitewater Lake built?
Pr-21 Ret. Dam./Whitewater Lake was completed in 1939, making it 87 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 Pr-21 Ret. Dam./Whitewater Lake?
Pr-21 Ret. Dam./Whitewater Lake 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.
When was Pr-21 Ret. Dam./Whitewater Lake last inspected?
Pr-21 Ret. Dam./Whitewater Lake was last inspected on October 24, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.