Spring Valley
Key Takeaway
Spring Valley is classified as high hazard in California. It was completed in 1968 and is 58 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 | 37 ft (taller than 41.5% in CA) |
| Dam Length | 300 ft |
| Dam Type | Earth |
| Max Storage | 325 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 19 sq mi |
| Year Completed | 1968 (58 years old) |
| NID ID | CA00571 |
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
County of Lake
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Spring Valley?
Spring Valley 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 Spring Valley?
Spring Valley is owned by County of Lake (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Spring Valley built?
Spring Valley was completed in 1968, making it 58 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 Spring Valley?
Spring Valley serves the following purposes: Water Supply, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Spring Valley?
Spring Valley has a dam height of 37 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 Spring Valley last inspected?
Spring Valley was last inspected on January 28, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.