Spooner
Spooner is an earth dam located in Lassen County, California, built in 1906. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Spooner
The primary purpose of Spooner 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 Gary Johns (private). It impounds the Tr Ash Creek.
The dam stands 17 feet tall and stretches 450 feet across, creates a reservoir covering 635 acres, has a maximum storage capacity of 3,123 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1906, 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 10/04/2023.
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Location
| State | California |
| County | Lassen |
| River/Stream | Tr Ash Creek |
| Coordinates | 41.01440, -120.63080 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 450 ft |
| Year Completed | 1906 (120 years old) |
Storage & Hydraulics
| NID Storage | 3,123 acre-ft |
| Max Storage | 3,123 acre-ft |
| Surface Area | 635 acres |
| Drainage Area | 6 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Gary Johns |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/04/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00957 |
| Federal ID | CA00957 |
| More Info | State Dam Safety Program |