Glenwood Twp 26 Reservoir Report

Last Updated: December 13, 2025

Glenwood Twp 26, located in Pope County, Minnesota, is a privately owned dam on the East Branch of the Chippewa River.


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Summary

Built in 1964, this dam stands at a height of 9 feet and has a length of 325 feet. With a storage capacity of 2184 acre-feet and a drainage area of 60.6 square miles, Glenwood Twp 26 plays a crucial role in managing water resources in the region.

Despite its low hazard potential, the condition assessment of Glenwood Twp 26 is deemed poor, as last inspected in October 2017. The dam's Emergency Action Plan (EAP) status is currently unspecified, highlighting the need for updated emergency preparedness measures. With the dam being under state regulation and inspection by the Minnesota Department of Natural Resources, it is essential to address the poor condition assessment and ensure that the dam meets safety guidelines to mitigate potential risks.

As a structure with a primary purpose classified as 'Other', Glenwood Twp 26 serves as a vital component in the water management infrastructure of the area. With its location in a picturesque landscape and its role in controlling water flow on the Chippewa River, this dam is of interest to water resource and climate enthusiasts who are passionate about safeguarding our natural environment and ensuring the resilience of our water infrastructure.

Year Completed

1964

Dam Length

325

Dam Height

6

River Or Stream

CHIPPEWA RIVER E BRANCH

Primary Dam Type

Other

Surface Area

17

Drainage Area

60.6

Nid Storage

2184

Structural Height

9

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

9
       
Seasonal Comparison

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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.