Clear Lake
Key Takeaway
Clear Lake is classified as low hazard in California. It was completed in 1914 and is 112 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 35 ft (taller than 38.2% in CA) |
| Dam Length | 200 ft |
| Dam Type | Concrete |
| Max Storage | 378.0K acre-ft |
| Normal Storage | 320.0K acre-ft |
| Surface Area | 43,900 acres |
| Drainage Area | 528 sq mi |
| Max Discharge | 20,000 cfs |
| Year Completed | 1914 (112 years old) |
| NID ID | CA00911 |
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
Yolo County Flood Control and Water Conservation District
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Clear Lake?
Clear Lake 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 Clear Lake?
Clear Lake is owned by Yolo County Flood Control and Water Conservation District (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Clear Lake built?
Clear Lake was completed in 1914, making it 112 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 Clear Lake?
Clear Lake serves the following purposes: Irrigation, Hydroelectric, Water Supply, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Clear Lake?
Clear Lake has a dam height of 35 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 Clear Lake last inspected?
Clear Lake was last inspected on September 13, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.