Peterson Lake
Key Takeaway
Peterson Lake is classified as high hazard in Colorado. It was completed in 1973 and is 53 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 | 38 ft (taller than 79.2% in CO) |
| Dam Length | 231 ft |
| Dam Type | Gravity |
| Max Storage | 1.4K acre-ft |
| Normal Storage | 1.2K acre-ft |
| Surface Area | 55 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 9,240 cfs |
| Year Completed | 1973 (53 years old) |
| NID ID | CO00150 |
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
CITY OF GREELEY DEPT. OF WATER RESOURCES (GUSTAFSO
Local Government
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High Hazard 45 ftFrequently Asked Questions
What is the hazard classification of Peterson Lake?
Peterson Lake 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 Peterson Lake?
Peterson Lake is owned by CITY OF GREELEY DEPT. OF WATER RESOURCES (GUSTAFSO (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Peterson Lake built?
Peterson Lake was completed in 1973, making it 53 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 Peterson Lake?
Peterson Lake serves the following purposes: Water Supply, Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Peterson Lake?
Peterson Lake has a dam height of 38 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 Peterson Lake last inspected?
Peterson Lake was last inspected on June 27, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.