St. Helena Lower
Napa County, California (near St. Helena)
River/Stream: Tr Napa River
High Hazard
Failure would likely cause loss of life
Key Facts
Condition Assessment
PoorLast inspected: 2024-04-03
Hazard Classification: High — This describes the potential consequences of dam failure, not the likelihood of failure.
Condition Assessment: Poor — This describes the current physical condition of the dam based on the most recent inspection.
Location
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Quick Stats
- NID ID
- CA00148
- State
- California (CA)
- Coordinates
- 38.50730, -122.49120
- Age
- 148 years
Nearby Dams
External Resources
Data sourced from the National Inventory of Dams (NID). Information may not reflect the most current status of this dam. Hazard classification reflects potential consequences of failure, not the likelihood of failure or the current condition.