Squaw Creek Reservoir Report

Last Updated: December 5, 2025

Squaw Creek, located in Marinette, Wisconsin, is a privately owned dam with a primary purpose of recreation.


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Summary

Completed in 1961, this gravity dam stands at a height of 11 feet and has a storage capacity of 52 acre-feet, with a normal storage level of 30 acre-feet. The dam is situated on Squaw Creek, with a drainage area of 10 square miles and a maximum discharge capacity of 375 cubic feet per second.

Despite being classified as having a low hazard potential, Squaw Creek dam has a moderate risk assessment rating of 3. The condition assessment of the dam is currently marked as "Not Rated," with the last inspection date recorded in November 2012. The dam's inspection frequency is every 10 years, and it is regulated, permitted, inspected, and enforced by the Wisconsin Department of Natural Resources (WIDNR). The dam does not have an Emergency Action Plan (EAP) in place, indicating potential room for improvement in emergency preparedness.

Overall, Squaw Creek serves as a vital recreational resource in the area, offering opportunities for outdoor activities and water-based recreation. While the dam has a relatively low hazard potential, there is a moderate risk associated with its current condition. Continued monitoring and maintenance efforts, along with the development of an EAP, could help ensure the safety and longevity of Squaw Creek dam for both recreational users and the surrounding community.

Year Completed

1961

Dam Length

175

Dam Height

11

River Or Stream

SQUAW CREEK

Primary Dam Type

Gravity

Surface Area

11

Hydraulic Height

8

Drainage Area

10

Nid Storage

52

Structural Height

11

Hazard Potential

Low

Nid Height

11
       
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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.