Ashley Waterworks Reservoir Reservoir Report
Nearby: Lake Crum Dam Somoco Wwt Lagoon
Last Updated: December 24, 2025
Ashley Waterworks Reservoir, located in Ashley, Ohio, is a man-made structure designed by Floyd G.
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Summary
Browne & Associates in Marion, Ohio. This reservoir is owned and regulated by the local government, specifically the Department of Natural Resources in Ohio. Built in 1954, the primary purpose of this Earth-type dam is for recreation, providing visitors with a serene location for outdoor activities like fishing, boating, and picnicking. With a height of 11.55 feet and a storage capacity of 51.5 acre-feet, the reservoir offers a peaceful escape for water resource and climate enthusiasts in Delaware County.
Despite its recreational benefits, Ashley Waterworks Reservoir has a significant hazard potential and a poor condition assessment as of December 2020. The dam is inspected every five years to ensure its structural integrity and safety. With a drainage area of only 0.01 square miles, the reservoir serves as a crucial water source for the surrounding community while also providing a habitat for local wildlife. While the dam's condition may be a concern, ongoing maintenance and risk management measures are essential to preserving this valuable water resource for future generations.
As climate change continues to impact water resources, the management and upkeep of structures like Ashley Waterworks Reservoir become increasingly important. By staying informed about the condition of this dam and advocating for sustainable water practices, enthusiasts can help protect and preserve this vital natural resource for years to come. Whether enjoying a peaceful day by the water or learning about the reservoir's history and design, visitors can appreciate the intersection of human ingenuity and environmental stewardship at Ashley Waterworks Reservoir.
Year Completed |
1954 |
Dam Length |
1860 |
Dam Height |
11.55 |
River Or Stream |
WEST BRANCH OF ALUM CREEK - OFFSTREAM |
Primary Dam Type |
Earth |
Drainage Area |
0.01 |
Nid Storage |
51.5 |
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.
Ashley Waterworks Reservoir
Delaware State Park - East ramp