Siedel Lake Dam Reservoir Report

Last Updated: December 6, 2025

Siedel Lake Dam, located in Medina, Ohio, is a private earth dam primarily utilized for recreational purposes.


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Summary

Constructed in 1968 by George H. Miner, this dam stands at a height of 39.1 feet and spans a length of 375 feet. With a maximum storage capacity of 152 acre-feet and a normal storage of 109 acre-feet, the dam is an essential water resource for the surrounding area.

Managed by the Department of Natural Resources in Ohio, Siedel Lake Dam boasts a surface area of 10.6 acres and a drainage area of 0.31 square miles. Despite being classified as having a high hazard potential, the dam's condition assessment as of October 2018 was deemed fair. Regular inspections are conducted every five years to ensure the safety and integrity of the structure, with the last inspection taking place in October 2018.

Climate enthusiasts and water resource advocates can appreciate the significance of Siedel Lake Dam as a vital component of the local ecosystem. Its role in providing recreational opportunities while also serving as a water storage facility underscores the importance of sustainable management practices to safeguard this crucial infrastructure for future generations.

Year Completed

1968

Dam Length

375

Dam Height

39.1

River Or Stream

TRIBUTARY TO WEST BRANCH ROCKY RIVER

Primary Dam Type

Earth

Surface Area

10.6

Drainage Area

0.31

Nid Storage

152

Hazard Potential

High

Nid Height

39
       
Seasonal Comparison

Weather Forecast

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.