Hardy Reservoir Report

Last Updated: December 5, 2025

Hardy is a captivating hydroelectric dam located in Newaygo, Michigan, along the Muskegon River.


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Summary

Built in 1931, this Earth dam stands at 106 feet tall and stretches 2580 feet in length, with a storage capacity of 134,973 acre-feet. The dam serves multiple purposes, including flood risk reduction, recreation, and of course, generating hydroelectric power.

Managed by the Federal Energy Regulatory Commission, Hardy's hazard potential is classified as high, with a very high risk assessment rating. Despite its age, the condition assessment is not available, emphasizing the need for regular inspections and maintenance. The dam features a controlled spillway and three other controlled outlet gates, ensuring efficient water management. Its location in the Chicago District and the involvement of Congressman Bill Huizenga highlight the importance of this vital water resource in the region.

For water resource and climate enthusiasts, Hardy represents a significant piece of infrastructure with historical significance and ongoing importance in managing the Muskegon River's flow. As a public utility, it plays a crucial role in providing clean energy, recreational opportunities, and protection against flooding. The dam's design by Fargo Engineering and its federal oversight underscore the collaboration necessary to sustainably manage water resources in Michigan. Hardy stands as a testament to the intersection of engineering, environmental stewardship, and public safety in the face of a changing climate.

Year Completed

1931

Dam Length

2580

Dam Height

100

River Or Stream

Muskegon River

Primary Dam Type

Earth

Surface Area

3902

Hydraulic Height

100

Drainage Area

1910

Nid Storage

134973

Structural Height

106

Outlet Gates

Other Controlled - 3

Hazard Potential

High

Foundations

Soil

Nid Height

106
       
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.