Hidden Lake
Key Takeaway
Hidden Lake is classified as low hazard in Colorado. It was completed in 1958 and is 68 years old. Its primary use is recreation.
Physical Details
| Dam Height | 10 ft (taller than 4.4% in CO) |
| Dam Length | 202 ft |
| Dam Type | Earth |
| Max Storage | 650 acre-ft |
| Normal Storage | 270 acre-ft |
| Surface Area | 111 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 3,600 cfs |
| Year Completed | 1958 (68 years old) |
| NID ID | CO00200 |
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
MAYHAM RESERVOIR COMPANY (GILLIS, JASON)
Private
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Low Hazard 19 ftFrequently Asked Questions
What is the hazard classification of Hidden Lake?
Hidden Lake 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 Hidden Lake?
Hidden Lake is owned by MAYHAM RESERVOIR COMPANY (GILLIS, JASON) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hidden Lake built?
Hidden Lake was completed in 1958, making it 68 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 Hidden Lake?
Hidden Lake serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Hidden Lake?
Hidden Lake has a dam height of 10 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 Hidden Lake last inspected?
Hidden Lake was last inspected on October 11, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.