Mendiboure
Mendiboure is an earth dam located in Lassen County, California, built in 1949. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Mendiboure
The primary purpose of Mendiboure 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 Mary Mendiboure (private). It impounds the Tr Van Loan Cr.
The dam stands 30 feet tall and stretches 800 feet across, creates a reservoir covering 105 acres, has a maximum storage capacity of 1,130 acre-feet, and collects water from a drainage area of 8 square miles. Completed in 1949, the structure is well-established, with more than 75 years of service.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 06/12/2024.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The California dam safety program can provide more specific information about emergency planning for this structure.
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 | Tr Van Loan Cr |
| Coordinates | 40.99690, -120.40870 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 800 ft |
| Year Completed | 1949 (77 years old) |
Storage & Hydraulics
| NID Storage | 1,130 acre-ft |
| Max Storage | 1,130 acre-ft |
| Surface Area | 105 acres |
| Drainage Area | 8 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Mary Mendiboure |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/12/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00942 |
| Federal ID | CA00942 |
| More Info | State Dam Safety Program |