Mccomb Upground Reservoir No. 1 Reservoir Report
Last Updated: December 19, 2025
Mccomb Upground Reservoir No.
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Summary
1, located in Hancock County, Ohio, is a crucial water supply structure managed by the local government. Constructed in 1953 by Emerson D. Wertz and Associates, this earth dam stands at a height of 17 feet and has a storage capacity of 90 acre-feet. Serving as a primary source of water for the city of McComb, the reservoir covers a surface area of 6.4 acres and drains a small area of 0.01 square miles.
Regulated by the Department of Natural Resources in Ohio, Mccomb Upground Reservoir No. 1 is regularly inspected to ensure its structural integrity and operational efficiency. Classified as having a high hazard potential, the dam is rated in fair condition as of the last assessment in 2019. With a maximum storage capacity of 90 acre-feet and a normal storage level of 70 acre-feet, this water resource plays a vital role in meeting the needs of the local community while adhering to state regulatory standards for safety and maintenance.
Year Completed |
1953 |
Dam Length |
1980 |
Dam Height |
17 |
River Or Stream |
RADER CREEK - OFFSTREAM |
Primary Dam Type |
Earth |
Surface Area |
6.4 |
Drainage Area |
0.01 |
Nid Storage |
90 |
Hazard Potential |
High |
Nid Height |
17 |
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.
Mccomb Upground Reservoir No. 1