Clover Valley
Clover Valley is an earth dam located in Placer County, California, built in 1909. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Clover Valley
Clover Valley is a dam in Placer, California. The dam is owned by Placer County Water Agency (local government). It impounds the Tr Antelope Cr.
The dam stands 35 feet tall and stretches 180 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 29 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1909, 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. The most recent inspection on record was 09/24/2025.
At 35 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | California |
| County | Placer |
| River/Stream | Tr Antelope Cr |
| Coordinates | 38.86830, -121.19760 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 180 ft |
| Year Completed | 1909 (117 years old) |
Storage & Hydraulics
| NID Storage | 29 acre-ft |
| Max Storage | 29 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | Placer County Water Agency |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/24/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00860 |
| Federal ID | CA00860 |
| More Info | State Dam Safety Program |