R. Fields No.1 Reservoir Report

Last Updated: December 6, 2025

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Summary

Fields No.1 is a privately owned earth dam located in Ziebach, South Dakota, along the TR CHEYENNE river. Built in 1954, this dam stands at a height of 14 feet and has a length of 1000 feet, providing a storage capacity of 130 acre-feet. Despite being categorized as low hazard potential, the dam is regulated by the South Dakota Department of Environment and Natural Resources, with state jurisdiction, permitting, inspection, and enforcement in place to ensure its safety and compliance.

Managed by the Natural Resources Conservation Service, R. Fields No.1 has not undergone a recent condition assessment and is currently rated as "Not Rated." Although emergency action and risk management measures are not explicitly outlined in the available data, the dam's maintenance and safety protocols are overseen by state regulatory agencies. With a maximum discharge capacity of 12,000 cubic feet per second, this dam plays a crucial role in water resource management, flood control, and ecosystem preservation within the region.

In the realm of water resource and climate enthusiasts, R. Fields No.1 presents an intriguing case study of a privately owned earth dam with a historical significance dating back to the mid-20th century. While its hazard potential is classified as low, the dam's operational and regulatory framework showcases the importance of state oversight in ensuring public safety and environmental protection. With its location along the TR CHEYENNE river in South Dakota, this dam serves as a vital infrastructure piece in the region's water supply and flood mitigation efforts, highlighting the intersection of human engineering and natural resource management in the face of evolving climate challenges.

Year Completed

1954

Dam Length

1000

Dam Height

14

River Or Stream

TR CHEYENNE

Primary Dam Type

Earth

Hydraulic Height

14

Nid Storage

130

Hazard Potential

Low

Nid Height

14
       
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.