Delta Reservoir No. 1 Reservoir Report
Last Updated: December 26, 2025
Delta Reservoir No.
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Summary
1, located in Delta, Ohio, is a key water supply reservoir managed by the local government. Built in 1933 by H.P. Jones and Company, this earthen dam stands at a height of 22.2 feet and has a storage capacity of 546 acre-feet. The reservoir serves the primary purpose of water supply and has a normal storage capacity of 422 acre-feet, covering a surface area of 40.6 acres.
Despite its historical significance, Delta Reservoir No. 1 is facing challenges in terms of its condition assessment, rated as poor with a high hazard potential. The last inspection in September 2017 highlighted the need for improvements and regular maintenance to ensure the safety and integrity of the dam. The Department of Natural Resources in Ohio regulates this reservoir, emphasizing the importance of state oversight and enforcement to mitigate any risks associated with its operation.
Water resource and climate enthusiasts closely monitor Delta Reservoir No. 1 as it plays a crucial role in supplying water to the local community. With its location near the Bad Creek tributary, the reservoir is a vital resource in the region. As efforts continue to enhance its condition and address safety concerns, stakeholders are working towards ensuring the long-term sustainability of this essential water supply infrastructure.
Year Completed |
1933 |
Dam Length |
2000 |
Dam Height |
22.2 |
River Or Stream |
TRIBUTARY TO BAD CREEK - OFFSTREAM |
Primary Dam Type |
Earth |
Surface Area |
40.6 |
Drainage Area |
0.17 |
Nid Storage |
546 |
Hazard Potential |
High |
Nid Height |
22 |
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.
Delta Reservoir No. 1