General Motors Primary Lagoon
Key Takeaway
General Motors Primary Lagoon is classified as significant hazard in Ohio. It was completed in 1940 and is 86 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 30 ft (taller than 61.5% in OH) |
| Dam Length | 2,300 ft |
| Dam Type | Earth |
| Max Storage | 230 acre-ft |
| Normal Storage | 198 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 100 cfs |
| Year Completed | 1940 (86 years old) |
| NID ID | OH01503 |
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
GM Defiance Casting Operations
Private
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Low Hazard 18 ftFrequently Asked Questions
What is the hazard classification of General Motors Primary Lagoon?
General Motors Primary Lagoon 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 General Motors Primary Lagoon?
General Motors Primary Lagoon is owned by GM Defiance Casting Operations (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was General Motors Primary Lagoon built?
General Motors Primary Lagoon was completed in 1940, making it 86 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 General Motors Primary Lagoon?
General Motors Primary Lagoon 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 General Motors Primary Lagoon?
General Motors Primary Lagoon has a dam height of 30 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 General Motors Primary Lagoon last inspected?
General Motors Primary Lagoon was last inspected on April 26, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.