Mark #1
Key Takeaway
Mark #1 is classified as low hazard in Colorado. It was completed in 1964 and is 62 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 22 ft (taller than 43.8% in CO) |
| Dam Length | 650 ft |
| Dam Type | Earth |
| Max Storage | 91 acre-ft |
| Normal Storage | 55 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 16 sq mi |
| Max Discharge | 410 cfs |
| Year Completed | 1964 (62 years old) |
| NID ID | CO01934 |
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
TWIN BUTTES LAND COMPANY (ROBERTSON, OWEN)
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Mark #1?
Mark #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 Mark #1?
Mark #1 is owned by TWIN BUTTES LAND COMPANY (ROBERTSON, OWEN) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mark #1 built?
Mark #1 was completed in 1964, making it 62 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 Mark #1?
Mark #1 serves the following purposes: Irrigation, Fire Protection, Stock, Or Small Fish Pond, Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mark #1?
Mark #1 has a dam height of 22 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 Mark #1 last inspected?
Mark #1 was last inspected on September 8, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.