Plum Canyon is an earth dam located in Modoc County, California, built in 1913. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 26 ft26 ft tall and 270 ft long, taller than 55% 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 Plum Canyon
The primary purpose of Plum Canyon 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 Warren Weber Et Al. (private). It impounds the Plum Creek.
The dam stands 26 feet tall and stretches 270 feet across, creates a reservoir covering 30 acres, has a maximum storage capacity of 184 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1913, 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 11/13/2025.
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Location
| State | California |
| County | Modoc |
| River/Stream | Plum Creek |
| Coordinates | 41.44160, -120.37980 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 270 ft |
| Year Completed | 1913 (113 years old) |
Storage & Hydraulics
| NID Storage | 184 acre-ft |
| Max Storage | 184 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Warren Weber Et Al. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/13/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00473 |
| Federal ID | CA00473 |
| More Info | State Dam Safety Program |