Upper Stehly
Key Takeaway
Upper Stehly is classified as high hazard in California. It was completed in 1999 and is 27 years old. Its primary use is water supply. 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 | 29 ft (taller than 29% in CA) |
| Dam Length | 420 ft |
| Dam Type | Earth |
| Max Storage | 229 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1999 (27 years old) |
| NID ID | CA01254 |
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
Private Entity
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Upper Stehly?
Upper Stehly 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 Upper Stehly?
Upper Stehly is owned by Private Entity (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Stehly built?
Upper Stehly was completed in 1999, making it 27 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 Stehly?
Upper Stehly serves the following purposes: Water Supply, Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Upper Stehly?
Upper Stehly has a dam height of 29 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 Upper Stehly last inspected?
Upper Stehly was last inspected on May 11, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.