Piedmont
Key Takeaway
Piedmont is classified as low hazard in California. It was completed in 1905 and is 121 years old. Its primary use is water supply.
Physical Details
| Dam Height | 64 ft (taller than 69.9% in CA) |
| Dam Length | 250 ft |
| Dam Type | Earth |
| Max Storage | 60 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1905 (121 years old) |
| NID ID | CA00170 |
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
East Bay Municipal Utility District
Public Utility
Nearby Dams
Lake Temescal
Alameda, CA
High Hazard 116 ftCentral
Alameda, CA
High Hazard 55 ftLake Orinda
Contra Costa, CA
High Hazard 45 ftC.L. Tilden Park
Contra Costa, CA
High Hazard 88 ftBriones
Contra Costa, CA
High Hazard 273 ftSan Pablo Clearwell
Contra Costa, CA
Low Hazard 42 ftLafayette
Contra Costa, CA
High Hazard 132 ftMoraga
Contra Costa, CA
High Hazard 37 ftFrequently Asked Questions
What is the hazard classification of Piedmont?
Piedmont 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 Piedmont?
Piedmont is owned by East Bay Municipal Utility District (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Piedmont built?
Piedmont was completed in 1905, making it 121 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 Piedmont?
Piedmont serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Piedmont?
Piedmont has a dam height of 64 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 Piedmont last inspected?
Piedmont was last inspected on March 17, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.