Pine Grove
Pine Grove is an earth dam located in Nevada County, California, built in 1911. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Pine Grove
The primary purpose of Pine Grove is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by San Juan Ridge County Water District (public utility). It impounds the Shady Creek.
The dam stands 42 feet tall and stretches 610 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 155 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1911, 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 02/26/2025.
At 42 feet, this dam is taller than 89% of dams nationwide.
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Location
| State | California |
| County | Nevada |
| River/Stream | Shady Creek |
| Coordinates | 39.31910, -121.12910 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 42 ft |
| Dam Height | 42 ft |
| Dam Length | 610 ft |
| Year Completed | 1911 (115 years old) |
Storage & Hydraulics
| NID Storage | 155 acre-ft |
| Max Storage | 155 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | San Juan Ridge County Water District |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/26/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00541 |
| Federal ID | CA00541 |
| More Info | State Dam Safety Program |