Kaiser And Fisher Flowage Reservoir Report

Last Updated: December 6, 2025

Kaiser and Fisher Flowage, located in Rusk County, Wisconsin, is a significant earth dam completed in 1966 for the primary purpose of recreation.


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Summary

With a height of 20 feet and a hydraulic height of 8 feet, this dam serves as a vital reservoir with a storage capacity of 800 acre-feet. The flowage covers an area of 86 acres and has a drainage area of 13 square miles, making it a crucial water resource for the region.

Managed by the Wisconsin Department of Natural Resources, Kaiser and Fisher Flowage is subject to regular state inspection, enforcement, and permitting to ensure its structural integrity and compliance with regulations. With a fair condition assessment and a hazard potential classified as significant, the flowage poses various risks that are actively managed to mitigate any potential threats to the surrounding community. The controlled spillway and maximum discharge capacity of 1200 cubic feet per second further demonstrate the importance of proper management and maintenance of this water resource.

For water resource and climate enthusiasts, Kaiser and Fisher Flowage represents a fascinating case study in reservoir management and dam infrastructure. The flowage's very high risk assessment rating underscores the need for ongoing monitoring and risk mitigation measures to safeguard this vital water source for both recreational and environmental purposes. As efforts continue to ensure the flowage's safety and functionality, its role in supporting the local ecosystem and community remains paramount in the face of changing climate conditions.

Year Completed

1966

Dam Length

1600

Dam Height

20

River Or Stream

Middle Fork Main Creek

Primary Dam Type

Earth

Surface Area

86

Hydraulic Height

8

Drainage Area

13

Nid Storage

800

Structural Height

20

Hazard Potential

Significant

Nid Height

20
       
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.