Phelps Mill Pond Reservoir Report

Last Updated: December 5, 2025

Phelps Mill Pond in Otter Tail, Minnesota, is a captivating water resource that serves as a recreational hub for water and climate enthusiasts.


°F

°F

mph

Wind

%

Humidity

Summary

Completed in 1873, this gravity dam stands at 15 feet tall and stretches 120 feet in length, providing a serene setting for outdoor activities along the Otter Tail River. With a normal storage capacity of 960 acre-feet and a maximum discharge of 4900 cubic feet per second, the pond offers a balance of beauty and functionality for visitors to enjoy.

Managed by the local government and regulated by the Minnesota Department of Natural Resources, Phelps Mill Pond is a well-maintained structure with a fair condition assessment. Despite its significant hazard potential, the dam has a risk assessment of very high (1) due to its age and location. The pond's controlled spillway and associated recreational purposes make it a valuable asset for the community, attracting visitors who appreciate its historical significance and picturesque surroundings. For water enthusiasts seeking adventure and relaxation, Phelps Mill Pond is a must-visit destination in Minnesota.

Year Completed

1873

Dam Length

120

Dam Height

11

River Or Stream

OTTER TAIL RIVER

Primary Dam Type

Gravity

Drainage Area

1066

Nid Storage

1300

Structural Height

15

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

15
       
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.