Toponas Rock #2
Key Takeaway
Toponas Rock #2 is classified as low hazard in Colorado. It was completed in 1945 and is 81 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 45 ft (taller than 85.3% in CO) |
| Dam Length | 500 ft |
| Dam Type | Earth |
| Max Storage | 268 acre-ft |
| Normal Storage | 197 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 570 cfs |
| Year Completed | 1945 (81 years old) |
| NID ID | CO01711 |
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
PERRY, CHUCK
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Toponas Rock #2?
Toponas Rock #2 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 Toponas Rock #2?
Toponas Rock #2 is owned by PERRY, CHUCK (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Toponas Rock #2 built?
Toponas Rock #2 was completed in 1945, making it 81 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 Toponas Rock #2?
Toponas Rock #2 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 Toponas Rock #2?
Toponas Rock #2 has a dam height of 45 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 Toponas Rock #2 last inspected?
Toponas Rock #2 was last inspected on July 24, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.