Clinton County Tributary No. 1 Dam Reservoir Report

Last Updated: December 25, 2025

Located in Wilmington, Ohio, the Clinton County Tributary No.


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Summary

1 Dam was completed in 1976 by Dodson-Lindblom Associates, serving as a crucial flood risk reduction infrastructure in the area. This earth dam stands at a height of 14.6 feet and spans a length of 665 feet, with a storage capacity of 102 acre-feet. With a primary purpose of flood risk reduction, the dam is state-regulated by the Department of Natural Resources and undergoes regular inspections to ensure its structural integrity.

Satisfactorily assessed in its condition as of March 2019, the Clinton County Tributary No. 1 Dam is deemed to have a high hazard potential given its location and function. Despite this, the dam has demonstrated its ability to effectively manage floodwaters, with a normal storage capacity of 38 acre-feet and a maximum discharge rate of 2713 cubic feet per second. The dam's emergency action plan is regularly updated to meet guidelines, ensuring prompt response in case of any unforeseen events.

As a vital component of water resource management in Clinton County, this dam plays a crucial role in protecting the local community from potential flood risks. With its strategic location along a tributary to Lytle Creek, the Clinton County Tributary No. 1 Dam stands as a testament to successful collaboration between local government agencies and engineering firms in safeguarding the region against natural disasters.

Year Completed

1976

Dam Length

665

Dam Height

14.6

River Or Stream

TRIBUTARY TO LYTLE CREEK

Primary Dam Type

Earth

Surface Area

10

Drainage Area

0.31

Nid Storage

102

Hazard Potential

High

Nid Height

15
       
Seasonal Comparison

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Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.