Lower North Wood County Park Reservoir Report

Last Updated: December 14, 2025

Lower North Wood County Park, located in Pittsville, Wisconsin, is a picturesque recreation area with a primary purpose of providing outdoor activities for visitors.


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Summary

The park features a gravity dam on the Yellow River, completed in 1939, with a height of 14 feet and a storage capacity of 60 acre-feet. With a low hazard potential and fair condition assessment, the dam serves as a controlled spillway with a maximum discharge of 7070 cubic feet per second.

The park offers a tranquil setting for water resource and climate enthusiasts to explore the dam's infrastructure and its impact on the surrounding environment. With a drainage area of 135 square miles and a normal storage capacity of 20 acre-feet, the dam plays a crucial role in managing water flow and maintaining the park's eight-acre surface area. Despite its age, the dam continues to be inspected regularly to ensure its structural integrity and safety for the community.

Visitors to Lower North Wood County Park can enjoy hiking, fishing, and wildlife observation in a scenic natural setting. With Sean P. Duffy as the representative for the area, the park demonstrates a commitment to environmental conservation and recreation. Whether seeking a peaceful retreat or a hands-on learning experience, this park offers a unique opportunity to appreciate the intersection of water resources and climate in a local context.

Year Completed

1939

Dam Length

150

Dam Height

14

River Or Stream

YELLOW

Primary Dam Type

Gravity

Surface Area

8

Hydraulic Height

6

Drainage Area

135

Nid Storage

60

Structural Height

14

Hazard Potential

Low

Nid Height

14
       
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.