Lucille Lake Reservoir Report

Last Updated: December 5, 2025

Lucille Lake, located in Cass County, Minnesota, is a captivating water resource managed by the USDA Forest Service for the primary purpose of Fish and Wildlife Pond.


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Summary

This Earth dam, completed in 1989, stands at a height of 10 feet and stretches 600 feet in length, with a storage capacity of 120 acre-feet. The lake, situated along the TR-BOY River, serves as a vital habitat for various wildlife species in the region.

Despite its low hazard potential, Lucille Lake underwent hydraulic modifications in 2018 to enhance its functionality. The dam's moderate risk assessment rating suggests proactive risk management measures in place to ensure its safety and integrity. Although not currently rated for its condition, regular inspections every 10 years help monitor and maintain the dam's operational status, ensuring its continued contribution to the local ecosystem.

Enthusiasts of water resources and climate in Minnesota can appreciate Lucille Lake's role as a valuable Fish and Wildlife Pond, managed by the Forest Service for conservation purposes. With its scenic location and vital contribution to the region's biodiversity, this Earth dam presents a fascinating opportunity for exploration and study in the realm of water resource management and climate resilience.

Years Modified

2018 - Hydraulic

Year Completed

1989

Dam Length

600

Dam Height

10

River Or Stream

TR-BOY RIVER

Primary Dam Type

Earth

Drainage Area

3

Nid Storage

120

Hazard Potential

Low

Nid Height

10
       
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.