Manot Ratedice Brengle Reservoir Report

Last Updated: December 6, 2025

Manot Ratedice Brengle, located in Harding, South Dakota, is a privately owned Earth dam constructed in 1959 across the TR N FORK MOREAU river.


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Summary

Managed by the Natural Resources Conservation Service, this dam stands at a height of 20 feet and has a storage capacity of 70 acre-feet. With a low hazard potential and a condition assessment of "Not Rated," this structure plays a crucial role in water resource management in the region.

Despite its modest size, Manot Ratedice Brengle serves an important function in regulating water flow and providing essential storage capacity for the surrounding area. With state jurisdiction, regulation, permitting, inspection, and enforcement in place, this dam ensures the safety and sustainability of the local water resources. Additionally, the proximity of the dam to the Omaha District of the USACE further underscores its significance in the larger context of water management in the region.

Overall, Manot Ratedice Brengle represents a valuable piece of infrastructure that contributes to the resilience of the local water supply and ecosystem. As climate change continues to impact water resources, structures like this play a vital role in mitigating risks and ensuring a reliable water supply for the community. With proper management and maintenance, this dam will continue to serve as a critical asset in safeguarding the water resources of South Dakota.

Year Completed

1959

Dam Length

603

Dam Height

20

River Or Stream

TR N FORK MOREAU

Primary Dam Type

Earth

Hydraulic Height

20

Nid Storage

70

Hazard Potential

Low

Nid Height

20
       
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.