Monument Lake
Key Takeaway
Monument Lake is classified as significant hazard in Colorado. It was completed in 1893 and is 133 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 47 ft (taller than 86.8% in CO) |
| Dam Length | 851 ft |
| Dam Type | Earth |
| Max Storage | 922 acre-ft |
| Normal Storage | 305 acre-ft |
| Surface Area | 31 acres |
| Drainage Area | 30 sq mi |
| Max Discharge | 21,849 cfs |
| Year Completed | 1893 (133 years old) |
| Year Modified | 2002 |
| NID ID | CO00429 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
TOWN OF MONUMENT
Local Government
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Low Hazard 80 ftFrequently Asked Questions
What is the hazard classification of Monument Lake?
Monument Lake is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Monument Lake?
Monument Lake is owned by TOWN OF MONUMENT (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Monument Lake built?
Monument Lake was completed in 1893, making it 133 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 Monument Lake?
Monument Lake serves the following purposes: Irrigation, Recreation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Monument Lake?
Monument Lake has a dam height of 47 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 Monument Lake last inspected?
Monument Lake was last inspected on May 14, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.