Deweese
Key Takeaway
Deweese is classified as high hazard in Colorado. It was completed in 1903 and is 123 years old. Its primary use is irrigation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 58 ft (taller than 90.9% in CO) |
| Dam Length | 386 ft |
| Dam Type | Arch |
| Max Storage | 4.4K acre-ft |
| Normal Storage | 4.3K acre-ft |
| Surface Area | 295 acres |
| Drainage Area | 370 sq mi |
| Max Discharge | 139,260 cfs |
| Year Completed | 1903 (123 years old) |
| NID ID | CO02068 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
DE WEESE DYE DITCH & RES. CO. (ARLIN BOLKEMA, PRES
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Deweese?
Deweese is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Deweese?
Deweese is owned by DE WEESE DYE DITCH & RES. CO. (ARLIN BOLKEMA, PRES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Deweese built?
Deweese was completed in 1903, making it 123 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 Deweese?
Deweese 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 Deweese?
Deweese has a dam height of 58 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 Deweese last inspected?
Deweese was last inspected on April 29, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.