Otto Silvan
Key Takeaway
Otto Silvan is classified as low hazard in Montana. It was completed in 1964 and is 62 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 9 ft (taller than 2.9% in MT) |
| Dam Length | 377 ft |
| Dam Type | Earth |
| Max Storage | 137 acre-ft |
| Normal Storage | 65 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 285 cfs |
| Year Completed | 1964 (62 years old) |
| NID ID | MT01242 |
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
OTTO H SILVAN
Private
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What is the hazard classification of Otto Silvan?
Otto Silvan 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 Otto Silvan?
Otto Silvan is owned by OTTO H SILVAN (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Otto Silvan built?
Otto Silvan was completed in 1964, making it 62 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 Otto Silvan?
Otto Silvan serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Otto Silvan?
Otto Silvan has a dam height of 9 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.