Plymouth Effluent
Key Takeaway
Plymouth Effluent is classified as significant hazard in California. It was completed in 1989 and is 37 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 59 ft (taller than 66.7% in CA) |
| Dam Length | 545 ft |
| Dam Type | Earth |
| Max Storage | 185 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1989 (37 years old) |
| NID ID | CA01189 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
City of Plymouth
Local Government
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Low Hazard 63 ftFrequently Asked Questions
What is the hazard classification of Plymouth Effluent?
Plymouth Effluent is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Plymouth Effluent?
Plymouth Effluent is owned by City of Plymouth (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Plymouth Effluent built?
Plymouth Effluent was completed in 1989, making it 37 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 Plymouth Effluent?
Plymouth Effluent serves the following purposes: Water Supply, Other, Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Plymouth Effluent?
Plymouth Effluent has a dam height of 59 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 Plymouth Effluent last inspected?
Plymouth Effluent was last inspected on September 1, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.