Mentink Dam 1746 Reservoir Report

Last Updated: December 6, 2025

Mentink Dam 1746, located in Polk, Nebraska, serves as a critical infrastructure for flood risk reduction along TR-Clear Creek.


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Summary

Built in 1978, this earth dam stands at a height of 27 feet and stretches 231 feet in length, providing a storage capacity of 96 acre-feet. Its primary purpose is to safeguard the surrounding area from potential flooding events, with a low hazard potential and a satisfactory condition assessment as of the last inspection in 2016.

Managed by the local government and regulated by the Nebraska Department of Natural Resources, Mentink Dam 1746 plays a vital role in protecting the community from water-related risks. With a drainage area of 0.4 square miles and a normal storage capacity of 20 acre-feet, this dam ensures the effective management of water resources in the region. Despite its age, the dam continues to meet regulatory standards, with state inspections, permitting, and enforcement in place to ensure its safe operation.

For water resource and climate enthusiasts, Mentink Dam 1746 provides a fascinating example of how infrastructure plays a crucial role in mitigating the impacts of extreme weather events. With a focus on flood risk reduction and a history of satisfactory performance, this dam exemplifies the importance of proactive measures in protecting communities and ecosystems from the challenges posed by a changing climate.

Year Completed

1978

Dam Length

231

Dam Height

27

River Or Stream

TR-CLEAR CREEK

Primary Dam Type

Earth

Surface Area

4

Hydraulic Height

26

Drainage Area

0.4

Nid Storage

96

Structural Height

27

Hazard Potential

Low

Foundations

Soil

Nid Height

27
       
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.