40th Street Dentention Basin
Key Takeaway
40th Street Dentention Basin is classified as significant hazard in Colorado. It was completed in 1998 and is 28 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 21 ft (taller than 40.7% in CO) |
| Dam Length | 961 ft |
| Dam Type | Earth |
| Max Storage | 82 acre-ft |
| Normal Storage | 77 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,189 cfs |
| Year Completed | 1998 (28 years old) |
| NID ID | CO02817 |
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
CDOT REGION 2 (GOCHA, MARK)
State Government
Nearby Dams
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High Hazard 20 ftFrequently Asked Questions
What is the hazard classification of 40th Street Dentention Basin?
40th Street Dentention Basin 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 40th Street Dentention Basin?
40th Street Dentention Basin is owned by CDOT REGION 2 (GOCHA, MARK) (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was 40th Street Dentention Basin built?
40th Street Dentention Basin was completed in 1998, making it 28 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 40th Street Dentention Basin?
40th Street Dentention Basin serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is 40th Street Dentention Basin?
40th Street Dentention Basin has a dam height of 21 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 40th Street Dentention Basin last inspected?
40th Street Dentention Basin was last inspected on December 14, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.