Jewett Wwt Lagoon Reservoir Report
Last Updated: December 5, 2025
Located in the Village of Jewett, Ohio, the Jewett Wwt Lagoon is a significant water resource managed by the local government.
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Summary
Constructed in 1999 by URS Greiner Woodward Clyde, this Earth-type dam serves various purposes, including providing storage capacity of 74.5 acre-feet and a drainage area of 0.01 square miles. With a maximum discharge of 14 cubic feet per second, the lagoon has a surface area of 6.5 acres and a dam height of 12 feet.
Under the regulatory oversight of the Ohio Department of Natural Resources, the Jewett Wwt Lagoon is subject to regular inspections, with its condition assessed as satisfactory as of August 2020. It has a significant hazard potential and an inspection frequency of 5 years. The emergency action plan (EAP) status and risk assessment for the lagoon are currently not specified, but it meets state permitting and enforcement requirements, ensuring its effective operation and maintenance for water resource and climate enthusiasts to appreciate and monitor.
Year Completed |
1999 |
Dam Length |
2880 |
Dam Height |
12 |
River Or Stream |
CONOTTON CREEK - OFFSTREAM |
Primary Dam Type |
Earth |
Surface Area |
6.5 |
Drainage Area |
0.01 |
Nid Storage |
74.5 |
Hazard Potential |
Significant |
Nid Height |
12 |
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.
Jewett Wwt Lagoon