Gerig is a buttress dam located in Lassen County, California, built in 1939. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 74 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Gerig
The primary purpose of Gerig 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 Gerig Dam Association (private). It impounds the Pit River.
The dam stands 10 feet tall and stretches 74 feet across, creates a reservoir covering 10 acres, and has a maximum storage capacity of 110 acre-feet. Completed in 1939, the structure is well-established, with more than 75 years of service.
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 10/24/2022.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | California |
| County | Lassen |
| River/Stream | Pit River |
| Coordinates | 41.15440, -121.14900 |
Physical Characteristics
| Dam Type | Buttress |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 74 ft |
| Year Completed | 1939 (87 years old) |
Storage & Hydraulics
| NID Storage | 110 acre-ft |
| Max Storage | 110 acre-ft |
| Surface Area | 10 acres |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Gerig Dam Association |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/24/2022 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00941 |
| Federal ID | CA00941 |
| More Info | State Dam Safety Program |