Hardester North
Hardester North is an earth dam located in Napa County, California, built in 2003. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Hardester North
The primary purpose of Hardester North 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 Juliana Mutual Water Company (private). It impounds the Tr Burton Crrek.
The dam stands 36 feet tall and stretches 1,350 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 150 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2003, the structure is relatively new.
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 01/30/2025.
At 36 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | California |
| County | Napa |
| River/Stream | Tr Burton Crrek |
| Coordinates | 38.62330, -122.41130 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 1,350 ft |
| Year Completed | 2003 (23 years old) |
Storage & Hydraulics
| NID Storage | 150 acre-ft |
| Max Storage | 150 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Juliana Mutual Water Company |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/30/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA01375 |
| Federal ID | CA01375 |
| More Info | State Dam Safety Program |