Meadow Valley Spillway 7 Reservoir Report
Last Updated: December 13, 2025
Meadow Valley Spillway 7, located in Juneau, Wisconsin, is a state-regulated dam with a primary purpose of recreation.
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Summary
Built in 1938, this earth dam stands at a height of 8 feet and spans a length of 23,000 feet, with a storage capacity of 2,300 acre-feet. Situated on the Little Yellow Drainage Ditch, this controlled spillway features a low hazard potential and has a maximum discharge capacity of 1,800 cubic feet per second.
Despite its age, Meadow Valley Spillway 7 continues to be inspected regularly by the Wisconsin Department of Natural Resources, with the last inspection conducted in September 2011. The dam is deemed to have a very high risk level, with a risk assessment rating of 1. However, its condition is currently not rated, indicating the need for further assessment and potential maintenance or upgrades to ensure its structural integrity and safety for surrounding communities.
As a key recreational structure in the area, Meadow Valley Spillway 7 plays a vital role in providing water storage for various activities while also managing flood control. With its historical significance and ongoing regulatory oversight, this dam serves as an important landmark in the local landscape, contributing to water resource management efforts and climate resiliency in the region.
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
Weather Forecast
Nearby Streamflow Levels
Yellow River At Babcock
|
44cfs |
Yellow River At Necedah
|
52cfs |
Tenmile Creek Near Nekoosa
|
27cfs |
Wisconsin River At Wisconsin Rapids
|
1960cfs |
Lemonweir River At New Lisbon
|
261cfs |
Black River At Neillsville
|
193cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Meadow Valley Spillway 7