E. A. Wright
E. A. Wright is an earth dam located in Glenn County, California, built in 1950. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About E. A. Wright
The primary purpose of E. A. Wright 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 Mast Family Partnership (private). It impounds the Small Creek.
The dam stands 38 feet tall and stretches 320 feet across, creates a reservoir covering 27 acres, has a maximum storage capacity of 400 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1950, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in 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 06/26/2025.
At 38 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | California |
| County | Glenn |
| River/Stream | Small Creek |
| Coordinates | 39.60880, -122.53960 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 320 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 400 acre-ft |
| Max Storage | 400 acre-ft |
| Surface Area | 27 acres |
| Drainage Area | 3 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Mast Family Partnership |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/26/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00556 |
| Federal ID | CA00556 |
| More Info | State Dam Safety Program |