Trump Lake Reservoir Report

Last Updated: December 13, 2025

Trump Lake, located in Jackson, Wisconsin, is a state-regulated water resource with a gravity dam completed in 1969.


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Summary

The dam stands at a height of 33 feet and has a storage capacity of 550 acre-feet, with a normal storage level of 320 acre-feet. The lake covers a surface area of 38 acres and is fed by the TR-TRUMP COULEE CREEK. With a controlled spillway and a low hazard potential, Trump Lake serves a primary purpose of "Other" and is inspected regularly by the Wisconsin Department of Natural Resources.

Despite its functional design, Trump Lake has been assessed as being in poor condition as of 2016, prompting concerns about its long-term viability. The risk assessment for the dam indicates a very high risk level, warranting careful monitoring and potential risk management measures in the future. The lake's emergency action plan status, inundation maps, and risk management measures remain unclear, raising questions about the preparedness for any potential emergencies or disasters that may arise in relation to the dam.

As a crucial water resource in the region, Trump Lake's condition and risk level highlight the importance of ongoing monitoring and maintenance to ensure the safety and sustainability of its operations. With a designated state regulatory agency overseeing its permitting, inspection, and enforcement, Trump Lake represents a key site for water resource and climate enthusiasts to follow closely to track its evolving condition and management practices.

Year Completed

1969

Dam Length

1120

Dam Height

33

River Or Stream

TR-TRUMP COULEE CREEK

Primary Dam Type

Gravity

Surface Area

38

Hydraulic Height

27

Drainage Area

1

Nid Storage

550

Structural Height

33

Hazard Potential

Low

Nid Height

33
       
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.