Mcginnis Lake Reservoir Report

Last Updated: December 5, 2025

Mcginnis Lake, also known as Farrey Lake, is a picturesque reservoir located in Adams County, Wisconsin, owned and regulated by the local government.


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Summary

Constructed in 1966 by the USDA NRCS, this gravity dam stands at a height of 15 feet and boasts a storage capacity of 370 acre-feet, making it an ideal spot for recreational activities. The lake covers a surface area of 33 acres and is fed by Neenah Creek, providing a tranquil setting for water enthusiasts to enjoy.

With a low hazard potential and fair condition assessment, Mcginnis Lake offers a safe and enjoyable environment for visitors. The controlled spillway, with a maximum discharge of 14 cubic feet per second, ensures water levels are managed effectively. The risk assessment for the dam is rated as very high, indicating that proper risk management measures are in place to ensure the safety of the structure and surrounding area. Despite its small drainage area of 0.2 square miles, Mcginnis Lake remains a popular destination for outdoor recreation in the region.

Overall, Mcginnis Lake serves as a valuable water resource for the community, providing not only recreational opportunities but also important flood control and water storage functions. As a well-maintained and regulated dam, it stands as a testament to the successful collaboration between local government agencies and the USDA NRCS in managing and preserving water resources in Adams County, Wisconsin. Whether for fishing, boating, or simply enjoying the serene surroundings, Mcginnis Lake offers a peaceful retreat for water and climate enthusiasts alike.

Year Completed

1966

Dam Length

450

Dam Height

15

River Or Stream

NEENAH CREEK

Primary Dam Type

Gravity

Surface Area

33

Hydraulic Height

11

Drainage Area

0.2

Nid Storage

370

Structural Height

15

Hazard Potential

Low

Nid Height

15
       
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.
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Area Campgrounds