Ross
Key Takeaway
Ross is classified as low hazard in California. It was completed in 1892 and is 134 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 44 ft (taller than 52.6% in CA) |
| Dam Length | 710 ft |
| Dam Type | Gravity |
| Max Storage | 110 acre-ft |
| Normal Storage | 100 acre-ft |
| Surface Area | 15 acres |
| Max Discharge | 20 cfs |
| Year Completed | 1892 (134 years old) |
| NID ID | CA00424 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Calaveras County Water District
Private
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Low Hazard 60 ftFrequently Asked Questions
What is the hazard classification of Ross?
Ross is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Ross?
Ross is owned by Calaveras County Water District (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Ross built?
Ross was completed in 1892, making it 134 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 Ross?
Ross serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Ross?
Ross has a dam height of 44 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 Ross last inspected?
Ross was last inspected on August 10, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.