Glass Rock Lake Dam Reservoir Report

Last Updated: December 5, 2025

Glass Rock Lake Dam in Ohio is a private structure designed by TCW Company & BBC & M Consulting Engineers to serve as a critical water supply source in the region.


°F

°F

mph

Wind

%

Humidity

Summary

The dam stands at a height of 54 feet and stretches 970 feet in length, with a storage capacity of 825 acre-feet. Situated in Perry County, the dam is regulated by the Department of Natural Resources, ensuring that it meets state inspection and enforcement standards.

With a hazard potential rated as high and a fair condition assessment, Glass Rock Lake Dam is closely monitored through regular inspections every five years. Despite its age and the lack of information on the year of completion, the dam continues to provide essential water resources to the surrounding area. The dam's location near the tributary to Jonathan Creek underscores its importance in managing water flow and storage for the region's needs.

As climate change impacts water resources and infrastructure, the upkeep and maintenance of dams like Glass Rock Lake Dam are crucial to safeguarding communities and ecosystems. The dam's emergency action plan and risk management measures, although not fully detailed in the data, are essential components in ensuring the safety and resilience of the structure in the face of potential emergencies. As enthusiasts of water resources and climate resilience, understanding the role and condition of dams like Glass Rock Lake Dam is vital in promoting sustainable water management practices and preparedness for future challenges.

Dam Length

970

Dam Height

54

River Or Stream

TRIBUTARY TO JONATHAN CREEK

Primary Dam Type

Earth

Surface Area

47.4

Drainage Area

0.72

Nid Storage

825

Hazard Potential

High

Nid Height

54
       
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.