Resettlement Admin. 15 Reservoir Report

Last Updated: December 13, 2025

Resettlement Admin.


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Summary

15, also known as Whitetail Flowage, is a state-owned dam located in Jackson, Wisconsin. This recreational dam, completed in 1936, serves the primary purpose of providing recreational activities for visitors. With a height of 8 feet and a length of 6143 feet, the dam has a storage capacity of 430 acre-feet and covers a surface area of 94 acres.

Managed by the Wisconsin Department of Natural Resources, Resettlement Admin. 15 is regulated, permitted, inspected, and enforced by the state agency. Despite being classified as having a low hazard potential and fair condition assessment, the dam is considered to have a very high risk due to its location and characteristics. Emergency action plans have been prepared, but their compliance with guidelines and effectiveness in risk management remain unclear.

With a controlled spillway and a maximum discharge of 755 cubic feet per second, Resettlement Admin. 15 provides a safe and enjoyable environment for outdoor enthusiasts. However, ongoing risk assessments and management measures are essential to ensure the continued safety and sustainability of this valuable water resource in Wisconsin.

Years Modified

1937 - Other

Year Completed

1936

Dam Length

6143

Dam Height

8

River Or Stream

CREEK 29 8 TR MORRISON CREEK

Primary Dam Type

Earth

Surface Area

94

Hydraulic Height

4

Drainage Area

12

Nid Storage

430

Structural Height

8

Hazard Potential

Low

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.