Kelley And Greiner
Kelley And Greiner is an earth dam located in Modoc County, California, built in 1923. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Kelley And Greiner
The primary purpose of Kelley And Greiner 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 Matthew And Amanda Sullivan (private). It impounds the Tr Pit River.
The dam stands 11 feet tall and stretches 580 feet across, creates a reservoir covering 36 acres, has a maximum storage capacity of 71 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1923, 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 11/12/2025.
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Location
| State | California |
| County | Modoc |
| River/Stream | Tr Pit River |
| Coordinates | 41.55910, -120.48660 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 580 ft |
| Year Completed | 1923 (103 years old) |
Storage & Hydraulics
| NID Storage | 71 acre-ft |
| Max Storage | 71 acre-ft |
| Surface Area | 36 acres |
| Drainage Area | 4 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Matthew and Amanda Sullivan |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/12/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00470 |
| Federal ID | CA00470 |
| More Info | State Dam Safety Program |