Pomme De Terre Lake Reservoir Report

Last Updated: December 5, 2025

Pomme De Terre Lake, located in Barrett, Minnesota, is a stunning reservoir on the Pomme De Terre River managed by the Minnesota Department of Natural Resources.


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Summary

Primarily used for recreation, this concrete gravity dam stands at 10 feet high and has a hydraulic height of 2.6 feet, providing a storage capacity of 23,000 acre-feet. With a surface area of 1,948 acres and a drainage area of 175 square miles, the lake offers ample opportunities for water-based activities and scenic views.

Despite its low hazard potential, Pomme De Terre Lake is subject to regular state inspection, enforcement, and permitting by the Minnesota DNR's Environmental and Water Resources division. The dam's condition was last assessed as satisfactory in 2013, and it has since undergone routine inspections to ensure public safety. With a moderate risk rating, the reservoir is equipped with an uncontrolled spillway and a width of 56 feet to manage water levels during heavy rainfall events.

Water resource and climate enthusiasts will appreciate Pomme De Terre Lake's vital role in providing recreational opportunities and supporting local ecosystems in Grant County, Minnesota. As a beloved destination for boating, fishing, and wildlife observation, this reservoir serves as a valuable water resource within the region. With its state-regulated operations and commitment to safety, Pomme De Terre Lake stands as a well-maintained and cherished asset for the community.

Dam Length

57

Dam Height

7

River Or Stream

POMME DE TERRE RIVER

Primary Dam Type

Concrete

Surface Area

1948

Hydraulic Height

2.6

Drainage Area

175

Nid Storage

23000

Structural Height

10

Hazard Potential

Low

Foundations

Unlisted/Unknown

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.