Holland Lake Dam Reservoir Report
Last Updated: December 20, 2025
Holland Lake Dam, located in West Liberty, Ohio, is a private-owned structure regulated by the Department of Natural Resources.
°F
°F
mph
Wind
%
Humidity
Summary
The dam, standing at a height of 34 feet and stretching 500 feet in length, serves primarily for recreational purposes, with a storage capacity of 112.1 acre-feet and a surface area of 6 acres. It is situated on a tributary to the Mad River, within the Huntington District. Despite its significance, the dam is classified as having a poor condition assessment, with a significant hazard potential.
This earth-type dam has a normal storage capacity of 22 acre-feet and a drainage area of 0.27 square miles. It has a maximum discharge capacity of 131 cubic feet per second, indicating its importance for water resource management in the area. The last inspection of the dam took place on December 5, 2019, with a frequency of inspection every five years. With its crucial role in local recreation and water storage, the condition assessment and risk management of Holland Lake Dam are vital aspects that need to be addressed to ensure its long-term sustainability and safety for the surrounding community and the environment.
Given its poor condition assessment and significant hazard potential, the maintenance and improvement of Holland Lake Dam are essential to mitigate risks and ensure the safety of the area. Regular inspections, risk assessments, and emergency preparedness measures need to be implemented to address any potential issues and safeguard the dam's structural integrity. As a key element in water resource management and recreational activities, Holland Lake Dam's preservation is crucial for the sustainable development and climate resilience of the region.
Dam Length |
500 |
Dam Height |
34 |
River Or Stream |
TRIBUTARY TO MAD RIVER |
Primary Dam Type |
Earth |
Surface Area |
6 |
Drainage Area |
0.27 |
Nid Storage |
112.1 |
Hazard Potential |
Significant |
Nid Height |
34 |
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.
Holland Lake Dam