Black Lake #1
Key Takeaway
Black Lake #1 is classified as high hazard in Colorado. It was completed in 1939 and is 87 years old. Its primary use is water supply. 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 | 31 ft (taller than 68.6% in CO) |
| Dam Length | 400 ft |
| Dam Type | Earth |
| Max Storage | 642 acre-ft |
| Normal Storage | 469 acre-ft |
| Surface Area | 28 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 3,600 cfs |
| Year Completed | 1939 (87 years old) |
| NID ID | CO02188 |
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
EAGLE RIVER WATER & SANITATION DISTRICT (WRIGHT, L
Public Utility
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High Hazard 135 ftFrequently Asked Questions
What is the hazard classification of Black Lake #1?
Black Lake #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 Black Lake #1?
Black Lake #1 is owned by EAGLE RIVER WATER & SANITATION DISTRICT (WRIGHT, L (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Black Lake #1 built?
Black Lake #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 Black Lake #1?
Black Lake #1 serves the following purposes: Water Supply, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Black Lake #1?
Black Lake #1 has a dam height of 31 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 Black Lake #1 last inspected?
Black Lake #1 was last inspected on June 16, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.