Petes Valley
Petes Valley is an earth dam located in Lassen County, California, built in 1954. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Petes Valley
The primary purpose of Petes Valley 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 Petes Valley Partners (private). It impounds the Petes Creek.
The dam stands 29 feet tall and stretches 1,360 feet across, creates a reservoir covering 31 acres, has a maximum storage capacity of 240 acre-feet, and collects water from a drainage area of 12 square miles. Completed in 1954, the structure is well into its service life at over 50 years 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 05/27/2025.
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Location
| State | California |
| County | Lassen |
| River/Stream | Petes Creek |
| Coordinates | 40.54410, -120.45240 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 1,360 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 240 acre-ft |
| Max Storage | 240 acre-ft |
| Surface Area | 31 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 6,355 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Petes Valley Partners |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/27/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00961 |
| Federal ID | CA00961 |
| More Info | State Dam Safety Program |