Korsness Pool Reservoir Report

Last Updated: December 5, 2025

Korsness Pool, also known as Mille Lacs Wma, is a state-owned water resource located in MILACA, Minnesota.


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Summary

This dam structure on the RUM RIVER-TR was completed in 1959 and serves a primary purpose of 'Other'. The dam, with a height of 11 feet and length of 800 feet, has a storage capacity of 300 acre-feet and a low hazard potential.

Managed by the MNDNR EWR and subject to state regulations, Korsness Pool is equipped for state inspection, permitting, and enforcement. Although the condition assessment is currently 'Not Rated', the emergency action plan status and risk management measures are not updated. With a drainage area of 3.6 square miles and a normal storage capacity of 200 acre-feet, Korsness Pool offers a vital water resource in the Mille Lacs region for both human and environmental needs.

Year Completed

1959

Dam Length

800

Dam Height

11

River Or Stream

RUM RIVER-TR

Primary Dam Type

Earth

Drainage Area

3.6

Nid Storage

300

Structural Height

8

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

11
       
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.