Clear Lake
Clear Lake is a concrete dam located in Lake County, California, built in 1914. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Clear Lake
The primary purpose of Clear Lake is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Yolo County Flood Control And Water Conservation District (local government). It impounds the Cache Creek near Rumsey.
The dam stands 43 feet tall and stretches 200 feet across, creates a reservoir covering 43,900 acres, has a maximum storage capacity of 378,000 acre-feet, and collects water from a drainage area of 528 square miles. Completed in 1914, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/13/2022.
At 43 feet, this dam is taller than 89% of dams nationwide.
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Location
| State | California |
| County | Lake |
| Nearest City | Rumsey |
| River/Stream | Cache Creek |
| Coordinates | 38.92270, -122.56630 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 43 ft |
| Dam Height | 35 ft |
| Dam Length | 200 ft |
| Year Completed | 1914 (112 years old) |
Storage & Hydraulics
| NID Storage | 378,000 acre-ft |
| Max Storage | 378,000 acre-ft |
| Normal Storage | 320,000 acre-ft |
| Surface Area | 43,900 acres |
| Drainage Area | 528 sq mi |
| Max Discharge | 20,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Yolo County Flood Control and Water Conservation District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/13/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA00911 |
| Federal ID | CA00911 |
| More Info | State Dam Safety Program |