School Section Lake Reservoir Report

Last Updated: December 5, 2025

Situated in the picturesque county of Waukesha, Wisconsin, School Section Lake is a charming reservoir that serves as a haven for water resource and climate enthusiasts alike.


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Summary

Managed by the local government, this gravity dam was completed in 1937 with a primary purpose of recreation. Boasting a normal storage capacity of 230 acre-feet and a surface area of 117 acres, the lake provides a serene escape for outdoor activities such as fishing, boating, and wildlife observation.

With a high hazard potential but fair condition assessment, School Section Lake stands as a vital water resource in the region. The dam, standing at a height of 8 feet and a length of 2900 feet, controls the flow of an unnamed tributary to the Bark River. Despite its age, the dam undergoes regular state inspections, permitting, and enforcement to ensure the safety and sustainability of its operations. Additionally, the risk assessment for the reservoir indicates a very high risk level, highlighting the importance of ongoing management measures to mitigate potential hazards.

For those interested in exploring the intersection of water management and environmental conservation, School Section Lake provides a fascinating case study. From its historical construction to its modern-day recreational offerings, this reservoir encapsulates the delicate balance between human enjoyment and ecological preservation. As climate change continues to impact water resources across the globe, the management and maintenance of structures like School Section Lake become increasingly crucial in safeguarding our natural landscapes for future generations.

Years Modified

1938 - Other

Year Completed

1937

Dam Length

2900

Dam Height

8

River Or Stream

U/N Tributary to Bark R.

Primary Dam Type

Gravity

Surface Area

117

Hydraulic Height

3

Drainage Area

2

Nid Storage

700

Structural Height

8

Hazard Potential

High

Nid Height

8
       
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.