Stillwater #1
Key Takeaway
Stillwater #1 is classified as high hazard in Colorado. It was completed in 1939 and is 87 years old. Its primary use is irrigation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 75 ft (taller than 93.4% in CO) |
| Dam Length | 1,500 ft |
| Dam Type | Earth |
| Max Storage | 7.4K acre-ft |
| Normal Storage | 6.1K acre-ft |
| Surface Area | 129 acres |
| Drainage Area | 8 sq mi |
| Max Discharge | 13,120 cfs |
| Year Completed | 1939 (87 years old) |
| NID ID | CO01030 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
BEAR RIVER RESERVOIR COMPANY (REDMOND, JOHN)
Private
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High Hazard 47 ftFrequently Asked Questions
What is the hazard classification of Stillwater #1?
Stillwater #1 is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Stillwater #1?
Stillwater #1 is owned by BEAR RIVER RESERVOIR COMPANY (REDMOND, JOHN) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Stillwater #1 built?
Stillwater #1 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 Stillwater #1?
Stillwater #1 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 Stillwater #1?
Stillwater #1 has a dam height of 75 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 Stillwater #1 last inspected?
Stillwater #1 was last inspected on October 4, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.