Alfred J. Bnot Ratedke Dam No.1 Reservoir Report

Last Updated: December 6, 2025

Alfred J.


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Summary

Bnot Ratedke Dam No.1, located in Butte, South Dakota, holds a significant amount of water with a storage capacity of 636 acre-feet. This earth dam, completed in 1960, stands at a height of 23 feet and spans a length of 590 feet, serving as a vital water resource in the region. The dam is regulated and inspected by the South Dakota Department of Environment and Natural Resources (DENR), ensuring its safety and compliance with state regulations.

Despite being classified as having a low hazard potential, the condition of Alfred J. Bnot Ratedke Dam No.1 is currently not rated. This dam plays a crucial role in managing water resources in the area, particularly in the Dry Draw river/stream system. With its capacity to hold and release water, the dam contributes to flood control, irrigation, and overall water supply management in the region. The Natural Resources Conservation Service was involved in its design, highlighting the collaborative efforts in ensuring water security and sustainability.

The construction and management of Alfred J. Bnot Ratedke Dam No.1 reflect a commitment to water resource management and climate resilience in South Dakota. As water resource and climate enthusiasts, understanding the significance of infrastructure like this earth dam sheds light on the interconnectedness of water systems and the importance of safeguarding them for future generations. The dam's role in mitigating risks, regulating water flow, and supporting various water-related activities underscores its importance in the region's overall water management strategy.

Year Completed

1960

Dam Length

590

Dam Height

23

River Or Stream

DRY DRAW

Primary Dam Type

Earth

Hydraulic Height

23

Nid Storage

636

Hazard Potential

Low

Nid Height

23
       
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.