Ludeman Reservoir Report

Last Updated: December 13, 2025

Ludeman is a privately owned dam located on Pine Creek in Jackson, Wisconsin.


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Summary

Built in 1969 by the USDA NRCS, this Earth-type dam serves primarily for recreational purposes with a dam height of 14 feet and a length of 835 feet. The dam has a normal storage capacity of 26 acre-feet and a maximum discharge of 80 cubic feet per second. Its spillway type is uncontrolled, and it has a low hazard potential with a fair condition assessment as of January 2016.

Although Ludeman has a moderate risk rating, with a hazard potential of low, it has not been updated in terms of emergency action plans or inundation maps since 2015. The dam is regulated by the Wisconsin Department of Natural Resources and has undergone inspections in 2015, with a frequency of every 10 years. The dam is situated in a picturesque location with a surface area of 8 acres and a drainage area of 1.2 square miles, making it a popular spot for recreational activities.

Despite its age, Ludeman continues to provide a safe and enjoyable environment for visitors, with its structural integrity meeting regulatory standards. Water resource and climate enthusiasts will appreciate Ludeman for its historical significance, its contribution to water storage, and its role in maintaining the ecological balance of the surrounding area along Pine Creek in Wisconsin.

Years Modified

1996 - Other

Year Completed

1969

Dam Length

835

Dam Height

14

River Or Stream

PINE CREEK

Primary Dam Type

Earth

Surface Area

8

Hydraulic Height

9

Drainage Area

1.2

Nid Storage

67

Structural Height

14

Hazard Potential

Low

Nid Height

14
       
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.