Water Supply No 4
Key Takeaway
Water Supply No 4 is classified as high hazard in Colorado. It was completed in 1880 and is 146 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 | 28 ft (taller than 61.6% in CO) |
| Dam Length | 1,110 ft |
| Dam Type | Earth |
| Max Storage | 2.0K acre-ft |
| Normal Storage | 1.5K acre-ft |
| Surface Area | 98 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,861 cfs |
| Year Completed | 1880 (146 years old) |
| NID ID | CO01759 |
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
WATER SUPPLY & STORAGE CO. (FRICK, DONALD)
Private
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Significant Hazard 26 ftFrequently Asked Questions
What is the hazard classification of Water Supply No 4?
Water Supply No 4 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 Water Supply No 4?
Water Supply No 4 is owned by WATER SUPPLY & STORAGE CO. (FRICK, DONALD) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Water Supply No 4 built?
Water Supply No 4 was completed in 1880, making it 146 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 Water Supply No 4?
Water Supply No 4 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 Water Supply No 4?
Water Supply No 4 has a dam height of 28 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 Water Supply No 4 last inspected?
Water Supply No 4 was last inspected on June 14, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.