Haglund Reservoir Report

Last Updated: December 11, 2025

Haglund,Dennis is a privately owned dam located in Pierce, Wisconsin, with a primary purpose of serving as a fire protection, stock, or small fish pond.


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Summary

Built in 1972 by the USDA NRCS, this earth dam stands at 30 feet high and spans 200 feet in length. With a storage capacity of 22 acre-feet, it covers a surface area of 1 acre and drains a smaller area of 0.3 square miles. The dam has a low hazard potential and a moderate risk assessment rating.

Managed by the Wisconsin Department of Natural Resources, Haglund,Dennis is regulated, permitted, inspected, and enforced by state agencies to ensure its safety and compliance with regulations. Despite being last inspected in 2010, with an inspection frequency of 10 years, the dam's condition assessment is currently not rated. The dam has an uncontrolled spillway type and a maximum discharge capacity of 122 cubic feet per second. While the dam does not have an Emergency Action Plan (EAP) in place, it meets the guidelines for risk management measures.

For water resource and climate enthusiasts, Haglund,Dennis offers a fascinating case study of a small-scale dam serving multiple purposes in a rural setting. Its location in the Morgan Coulee Creek watershed provides valuable insights into the importance of proper dam management for water supply, agricultural needs, and environmental conservation. With its historic construction and ongoing regulatory oversight, Haglund,Dennis exemplifies the intricate balance between human infrastructure and natural ecosystems, highlighting the critical role of responsible dam ownership and maintenance in mitigating potential risks and ensuring long-term sustainability.

Year Completed

1972

Dam Length

200

Dam Height

30

River Or Stream

NONNAV TR-MORGAN COULEE C

Primary Dam Type

Earth

Surface Area

1

Hydraulic Height

30

Drainage Area

0.3

Nid Storage

22

Structural Height

30

Hazard Potential

Low

Nid Height

30
       
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.