Poore Lake Reservoir
Poore Lake Reservoir is an earth dam located in Mono County, California, built in 1900. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Poore Lake Reservoir
The primary purpose of Poore Lake Reservoir 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 Park Livestock Company (private). It impounds the Poore Creek.
The dam stands 23 feet tall and stretches 400 feet across, creates a reservoir covering 94 acres, has a maximum storage capacity of 1,200 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1900, 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 10/28/2025.
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Location
| State | California |
| County | Mono |
| River/Stream | Poore Creek |
| Coordinates | 38.31590, -119.52230 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 400 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 1,200 acre-ft |
| Max Storage | 1,200 acre-ft |
| Surface Area | 94 acres |
| Drainage Area | 2 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Park Livestock Company |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/28/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00648 |
| Federal ID | CA00648 |
| More Info | State Dam Safety Program |