Big Monitor #1
Key Takeaway
Big Monitor #1 is classified as low hazard in Colorado. It was completed in 1946 and is 80 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 19 ft (taller than 32.7% in CO) |
| Dam Length | 280 ft |
| Dam Type | Earth |
| Max Storage | 107 acre-ft |
| Normal Storage | 80 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 161 cfs |
| Year Completed | 1946 (80 years old) |
| NID ID | CO02847 |
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
GRAZIANO, JAMES
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Big Monitor #1?
Big Monitor #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 Big Monitor #1?
Big Monitor #1 is owned by GRAZIANO, JAMES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Big Monitor #1 built?
Big Monitor #1 was completed in 1946, making it 80 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 Big Monitor #1?
Big Monitor #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 Big Monitor #1?
Big Monitor #1 has a dam height of 19 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 Big Monitor #1 last inspected?
Big Monitor #1 was last inspected on May 15, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.