Hall Mill Dam
Key Takeaway
Hall Mill Dam is classified as high hazard in California. It was completed in 1949 and is 77 years old. Its primary use is other. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 40 ft (taller than 46.3% in CA) |
| Dam Length | 220 ft |
| Dam Type | Earth |
| Year Completed | 1949 (77 years old) |
| NID ID | CA00768 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
USDA FS
Federal Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Hall Mill Dam?
Hall Mill Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Hall Mill Dam?
Hall Mill Dam is owned by USDA FS (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hall Mill Dam built?
Hall Mill Dam was completed in 1949, making it 77 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Hall Mill Dam?
Hall Mill Dam serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Hall Mill Dam?
Hall Mill Dam has a dam height of 40 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Hall Mill Dam last inspected?
Hall Mill Dam was last inspected on February 26, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.