Conley Reservoir Report

Last Updated: December 6, 2025

Conley, also known as the Vista Flowage, is a water resource located in Chippewa, Wisconsin, managed by the local government for fish and wildlife conservation and recreational purposes.


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Summary

The dam, completed in 1970, stands at a height of 10.2 feet and holds a storage capacity of 123 acre-feet. The structure is regulated by the Wisconsin Department of Natural Resources and undergoes regular inspections to ensure its fair condition and low hazard potential.

Situated on the North Branch Mud Creek, Conley covers an area of 20 acres and has a maximum discharge capacity of 88 cubic feet per second. The spillway type is uncontrolled, with a dam length of 600 feet. Despite its moderate risk level, the dam demonstrates a satisfactory risk assessment score of 3 and is in compliance with state permitting, inspection, and enforcement protocols. The surrounding community benefits from this water resource for both wildlife habitat preservation and recreational activities.

Overall, Conley serves as a vital ecosystem for the region, offering a haven for fish and wildlife while providing a recreational oasis for residents and visitors alike. With its low hazard potential and fair condition, this dam stands as a testament to effective water resource management by the local government in Wisconsin. Its regulated status and regular inspections ensure the safety and sustainability of the area, making Conley a valuable asset for water resource and climate enthusiasts to appreciate and protect.

Year Completed

1970

Dam Length

600

Dam Height

10.2

River Or Stream

North Branch Mud Creek

Primary Dam Type

Earth

Surface Area

20

Nid Storage

123

Structural Height

10.2

Hazard Potential

Low

Nid Height

10
       
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.