Meadow Valley Spillway 6 Reservoir Report

Last Updated: December 13, 2025

Meadow Valley Spillway 6, located in Juneau, Wisconsin, is a state-regulated dam with a primary purpose of recreation.


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Summary

Completed in 1938, this earth dam stands at a height of 8 feet and spans a length of 23,000 feet, creating a storage capacity of 2,300 acre-feet. The dam is situated on the Little Yellow Drainage Ditch and is under the jurisdiction of the Wisconsin Department of Natural Resources.

Although assessed as having a low hazard potential, Meadow Valley Spillway 6 is categorized as having a very high risk due to its age and lack of recent condition assessment. The dam features a controlled spillway with a width that is not specified, and has not been modified since 1939. While currently deemed to be in "Not Rated" condition, Meadow Valley Spillway 6 has not been inspected since September 2011, with an inspection frequency of 10 years, raising concerns about its safety and maintenance.

With its rich history and important role in the local water resource management, Meadow Valley Spillway 6 serves as a critical infrastructure for recreational activities while also posing potential risks that require careful monitoring and management to ensure the safety of surrounding communities and the environment.

Years Modified

1939 - Other

Year Completed

1938

Dam Length

23000

Dam Height

8

River Or Stream

LITTLE YELLOW DRAINAGE DITCH

Primary Dam Type

Earth

Surface Area

500

Hydraulic Height

8

Nid Storage

2300

Structural Height

8

Hazard Potential

Low

Nid Height

8
       
Seasonal Comparison

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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.