Cygnet Wwt Lagoon Reservoir Report
Last Updated: December 19, 2025
Located in Cygnet, Ohio, the Cygnet Wwt Lagoon is a significant water resource managed by the local government.
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Summary
This tailings dam, completed in 1994, serves the primary purpose of tailings storage and is regulated by the Department of Natural Resources. With a dam height of 9 feet and a storage capacity of 132.7 acre-feet, the lagoon covers a surface area of 15.8 acres and has a drainage area of 0.02 square miles, with a normal storage capacity of 100.3 acre-feet.
The dam, primarily made of earth with stone core and soil foundation, poses a significant hazard potential with a satisfactory condition assessment. Inspected every 5 years, the Cygnet Wwt Lagoon meets regulatory standards and has an uncontrolled spillway type with a maximum discharge of 2 cubic feet per second. In case of emergencies, the lagoon has preparedness plans in place, ensuring the safety and well-being of the surrounding community and environment.
With its moderate risk assessment rating and effective risk management measures, the Cygnet Wwt Lagoon serves as a vital water resource for the region. Its strategic location and design reflect a commitment to water conservation and climate resilience, making it a noteworthy site for water resource and climate enthusiasts to study and appreciate.
Year Completed |
1994 |
Dam Length |
3446 |
Dam Height |
9 |
River Or Stream |
ROCKY FORD |
Primary Dam Type |
Earth |
Surface Area |
15.8 |
Drainage Area |
0.02 |
Nid Storage |
132.7 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
9 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Cygnet Wwt Lagoon