Lake Louise Reservoir Report

Last Updated: December 12, 2025

Lake Louise is a charming reservoir located in Leroy, Minnesota, alongside the Little Iowa River.


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Summary

Managed by the Minnesota Department of Natural Resources, this state-regulated dam serves primarily for recreational purposes and was completed in the year 1900. With a gravity dam type and buttress core type, Lake Louise stands at a height of 12 feet and stretches 250 feet in length, offering a serene surface area of 15 acres for visitors to enjoy.

Surrounded by the picturesque Mower County landscape, Lake Louise provides a tranquil escape for water resource and climate enthusiasts seeking a peaceful retreat. The dam boasts a low hazard potential and fair condition assessment, ensuring the safety and enjoyment of all who visit. The reservoir's storage capacity of 150 acre-feet and drainage area of 64 square miles make it a valuable asset to the local ecosystem, while its proximity to the St. Paul District adds to its significance within the region.

Visitors to Lake Louise can bask in the beauty of its natural surroundings, partake in recreational activities, and appreciate the conservation efforts undertaken by the Minnesota Department of Natural Resources. Whether one seeks a day of fishing, boating, or simply soaking in the serene atmosphere, Lake Louise offers a tranquil haven for water enthusiasts to connect with nature and appreciate the importance of sustainable water resource management in a changing climate.

Year Completed

1900

Dam Length

250

Dam Height

9

River Or Stream

LITTLE IOWA RIVER

Primary Dam Type

Gravity

Surface Area

15

Drainage Area

64

Nid Storage

150

Structural Height

12

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

12
       
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.