Upper Stonewall
Key Takeaway
Upper Stonewall is classified as low hazard in Colorado. It was completed in 1910 and is 116 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 10 ft (taller than 4.4% in CO) |
| Dam Length | 470 ft |
| Dam Type | Earth |
| Max Storage | 65 acre-ft |
| Normal Storage | 47 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 125 cfs |
| Year Completed | 1910 (116 years old) |
| NID ID | CO02042 |
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
J. EVAN ROBERTS
Private
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Low Hazard 18 ftFrequently Asked Questions
What is the hazard classification of Upper Stonewall?
Upper Stonewall 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 Upper Stonewall?
Upper Stonewall is owned by J. EVAN ROBERTS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Stonewall built?
Upper Stonewall was completed in 1910, making it 116 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 Upper Stonewall?
Upper Stonewall 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 Upper Stonewall?
Upper Stonewall has a dam height of 10 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.