Healy Dam Reservoir Report

Last Updated: December 13, 2025

Healy Dam, located in Brule, South Dakota, was completed in 1949 and stands as a significant earth dam with a height of 22 feet.


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Summary

Managed by a private owner, the dam has a normal storage capacity of 43 acre-feet and a maximum storage of 56 acre-feet. With a maximum discharge of 160 cubic feet per second, the dam plays a crucial role in managing water resources in the area.

The dam, regulated by the South Dakota Department of Environment and Natural Resources, has not been rated for its condition assessment. Despite this, it is considered to have a significant hazard potential. With State jurisdiction, permitting, inspection, and enforcement in place, the dam ensures safety and compliance with regulations. The Natural Resources Conservation Service is responsible for its design, emphasizing the importance of sustainable water resource management.

For water resource and climate enthusiasts, Healy Dam offers a glimpse into the intricate network of infrastructure designed to regulate water flow and storage. Its location on the TR-MISSONot RatedI river and association with the St. Paul District of the US Army Corps of Engineers highlights its crucial role in the local ecosystem. As efforts continue to monitor and assess its condition, Healy Dam remains a key player in water management in South Dakota.

Year Completed

1949

Dam Length

382

Dam Height

22

River Or Stream

TR-MISSONot RatedI

Primary Dam Type

Earth

Hydraulic Height

22

Nid Storage

56

Hazard Potential

Significant

Nid Height

22
       
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.