Grizzly Creek
Grizzly Creek is an earth dam located in Butte County, California, built in 1964. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Grizzly Creek
The primary purpose of Grizzly Creek 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 Kerry & Stephanie Evert (private). It impounds the Grizzly Creek.
The dam stands 50 feet tall and stretches 280 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 76 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1964, the structure is well into its service life at over 50 years old.
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. An emergency action plan is in place for this dam. The most recent inspection on record was 08/28/2025.
At 50 feet, this dam is taller than 93% of dams nationwide.
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Location
| State | California |
| County | Butte |
| River/Stream | Grizzly Creek |
| Coordinates | 39.54160, -121.15530 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 50 ft |
| Dam Height | 50 ft |
| Dam Length | 280 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 76 acre-ft |
| Max Storage | 76 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Kerry & Stephanie Evert |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/28/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA00553 |
| Federal ID | CA00553 |
| More Info | State Dam Safety Program |