St. Marys Lime Sludge Lagoons
Key Takeaway
St. Marys Lime Sludge Lagoons is classified as significant hazard in Ohio. It was completed in 1988 and is 38 years old. Its primary use is tailings. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 13 ft (taller than 7.3% in OH) |
| Dam Length | 2,640 ft |
| Dam Type | Earth |
| Max Storage | 128 acre-ft |
| Normal Storage | 92 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 10 cfs |
| Year Completed | 1988 (38 years old) |
| NID ID | OH01212 |
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 St. Marys
Local Government
Nearby Dams
Grand Lake St. Marys - East Embankment
Auglaize, OH
High Hazard 18 ftForty Acre Pond Dam
Auglaize, OH
Low Hazard 15 ftMontezuma Club Island Wwt Lagoon Cell 4
Mercer, OH
Significant Hazard 17 ftMontezuma/Club Island Wwt Lagoons
Mercer, OH
Significant Hazard 17 ftGrand Lake St. Marys - West Embankment
Mercer, OH
High Hazard 20 ftFrequently Asked Questions
What is the hazard classification of St. Marys Lime Sludge Lagoons?
St. Marys Lime Sludge Lagoons 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 St. Marys Lime Sludge Lagoons?
St. Marys Lime Sludge Lagoons is owned by City of St. Marys (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was St. Marys Lime Sludge Lagoons built?
St. Marys Lime Sludge Lagoons was completed in 1988, making it 38 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 St. Marys Lime Sludge Lagoons?
St. Marys Lime Sludge Lagoons serves the following purposes: Tailings. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is St. Marys Lime Sludge Lagoons?
St. Marys Lime Sludge Lagoons has a dam height of 13 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 St. Marys Lime Sludge Lagoons last inspected?
St. Marys Lime Sludge Lagoons was last inspected on October 2, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.