J. M.
Key Takeaway
J. M. is classified as low hazard in Colorado. It was completed in 1915 and is 111 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 12 ft (taller than 11% in CO) |
| Dam Length | 540 ft |
| Dam Type | Earth |
| Max Storage | 300 acre-ft |
| Normal Storage | 200 acre-ft |
| Surface Area | 50 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 52 cfs |
| Year Completed | 1915 (111 years old) |
| NID ID | CO01997 |
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
WOLF SPRINGS RANCH (RANCH MANAGER)
Private
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What is the hazard classification of J. M.?
J. M. 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 J. M.?
J. M. is owned by WOLF SPRINGS RANCH (RANCH MANAGER) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was J. M. built?
J. M. was completed in 1915, making it 111 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 J. M.?
J. M. serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is J. M.?
J. M. has a dam height of 12 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 J. M. last inspected?
J. M. was last inspected on October 11, 2011. Inspection dates indicate when a formal review occurred, not the results of that inspection.