Stolte Reservoir Report

Last Updated: December 5, 2025

Stolte is a private earth dam located in Rock Springs, Wisconsin, with a primary purpose of providing fire protection, stock, or a small fish pond.


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Summary

Constructed in 1974 by the USDA NRCS, this dam stands at a height of 24.7 feet and has a hydraulic height of 13.5 feet. With a storage capacity of 78 acre-feet and a drainage area of 0.8 square miles, Stolte serves as a critical water resource for the area, particularly for fire protection and irrigation purposes.

Despite its essential role in water management, Stolte has been deemed to have a low hazard potential but an unsatisfactory condition according to a 2015 assessment. The dam has a moderate risk rating, with a maximum discharge capacity of 560 cubic feet per second and an uncontrolled spillway width of 70 feet. While the dam's last inspection was conducted in 2005, Stolte is regulated, permitted, inspected, and enforced by the Wisconsin Department of Natural Resources, ensuring its compliance with safety standards and regulations. Climate enthusiasts and water resource advocates can appreciate the significance of Stolte in supporting local water needs while highlighting the importance of regular maintenance and risk management for sustainable water infrastructure.

Year Completed

1974

Dam Length

470

Dam Height

24.7

River Or Stream

TR-NARROWS CREEK

Primary Dam Type

Earth

Surface Area

7

Hydraulic Height

13.5

Drainage Area

0.8

Nid Storage

78

Structural Height

24.7

Hazard Potential

Low

Nid Height

25
       
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.