St. Clairsville Reservoir No. 1 Dam Reservoir Report
Last Updated: December 5, 2025
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Summary
Clairsville Reservoir No. 1 Dam, located in Belmont County, Ohio, was completed in 1929 by THE JENNINGS-LAWRENCE CO. The dam stands at a height of 36.3 feet and has a length of 285 feet, holding a maximum storage capacity of 346 acre-feet for water supply purposes. Situated along the Little McMahon Creek, this earth dam is regulated by the Ohio Department of Natural Resources, ensuring state inspection, permitting, and enforcement measures are in place to maintain its safety and functionality.
With a normal storage capacity of 157.9 acre-feet and a drainage area of 1.37 square miles, St. Clairsville Reservoir No. 1 Dam serves as a vital water resource for the local community in Echo, Ohio. Despite its high hazard potential, the dam's condition is assessed as satisfactory as of the last inspection in November 2017. The dam's emergency action plan and risk management measures are yet to be fully documented, indicating a need for further preparation and assessment to mitigate potential risks and ensure the safety of surrounding areas in case of emergencies.
As a key infrastructure for water supply in the region, St. Clairsville Reservoir No. 1 Dam stands as a testament to the importance of proper regulation and maintenance of dams for water resource management and climate resilience. With a focus on enhancing emergency preparedness and risk management strategies, the dam can continue to play a crucial role in providing safe and reliable water supply to the community while safeguarding against potential hazards and ensuring long-term sustainability in the face of changing climate conditions.
Year Completed |
1929 |
Dam Length |
285 |
Dam Height |
36.3 |
River Or Stream |
LITTLE MCMAHON CREEK |
Primary Dam Type |
Earth |
Surface Area |
16.8 |
Drainage Area |
1.37 |
Nid Storage |
346 |
Hazard Potential |
High |
Nid Height |
36 |
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.
St. Clairsville Reservoir No. 1 Dam