Chace Valley
Chace Valley is an earth dam located in Lassen County, California, built in 1955. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Chace Valley
The primary purpose of Chace 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 Mr. Wynn And Tamsen Myers (private). It impounds the Tr Butte Creek.
The dam stands 16 feet tall and stretches 910 feet across, creates a reservoir covering 30 acres, has a maximum storage capacity of 92 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1955, 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 06/11/2025.
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Location
| State | California |
| County | Lassen |
| River/Stream | Tr Butte Creek |
| Coordinates | 41.15180, -120.88810 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 910 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 92 acre-ft |
| Max Storage | 92 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Mr. Wynn and Tamsen Myers |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/11/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00950 |
| Federal ID | CA00950 |
| More Info | State Dam Safety Program |