John May #1
Key Takeaway
John May #1 is classified as low hazard in Colorado. It was completed in 1967 and is 59 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 25 ft (taller than 53.1% in CO) |
| Dam Length | 1,000 ft |
| Dam Type | Earth |
| Max Storage | 40 acre-ft |
| Normal Storage | 25 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 300 cfs |
| Year Completed | 1967 (59 years old) |
| NID ID | CO02679 |
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
JOHN M. MAY (JOHN MAY)
Private
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Low Hazard 28 ftFrequently Asked Questions
What is the hazard classification of John May #1?
John May #1 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 John May #1?
John May #1 is owned by JOHN M. MAY (JOHN MAY) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was John May #1 built?
John May #1 was completed in 1967, making it 59 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 John May #1?
John May #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 John May #1?
John May #1 has a dam height of 25 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 John May #1 last inspected?
John May #1 was last inspected on October 17, 2013. Inspection dates indicate when a formal review occurred, not the results of that inspection.