Boole is an earth dam located in Placer County, California, built in 1951. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 25 ft25 ft tall and 180 ft long, taller than 50% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Boole
Boole is a dam in Placer, California. The dam is owned by Our Lady of the Oaks (private). It impounds the Tr American Rv.
The dam stands 25 feet tall and stretches 180 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 65 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1951, the structure is well into its service life at over 50 years 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 03/18/2025.
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Location
| State | California |
| County | Placer |
| River/Stream | Tr American Rv |
| Coordinates | 38.99640, -120.97620 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 180 ft |
| Year Completed | 1951 (75 years old) |
Storage & Hydraulics
| NID Storage | 65 acre-ft |
| Max Storage | 65 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | Our Lady of the Oaks |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 03/18/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00967 |
| Federal ID | CA00967 |
| More Info | State Dam Safety Program |