Indian Dam No.1 Reservoir Report

Last Updated: December 6, 2025

Indian Dam No.1, located in Fall River, South Dakota, is a privately-owned earth dam completed in 1932 with a height of 16 feet and a length of 630 feet.


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Summary

The dam has a storage capacity of 88 acre-feet and serves as a crucial structure on the tributary of the Cheyenne River. Despite being state-regulated and inspected, the dam is currently rated as "Not Rated" in terms of condition assessment, with a low hazard potential.

Managed by the Natural Resources Conservation Service, Indian Dam No.1 plays a vital role in water resource management in the region, providing essential storage and flood control capabilities. With a maximum discharge of 100 cubic feet per second, the dam contributes to the overall water management strategy in the area, ensuring the safety of nearby communities and enhancing the ecological health of the surrounding environment.

Although the dam's condition assessment is currently not rated, its low hazard potential suggests that it poses minimal risk to downstream areas. As a part of the state-regulated infrastructure, Indian Dam No.1 underscores the importance of effective dam management and regular inspections in safeguarding water resources and mitigating potential climate-related risks in the region.

Year Completed

1932

Dam Length

630

Dam Height

16

River Or Stream

TRIBUTARY CHEYENNE RIVER

Primary Dam Type

Earth

Hydraulic Height

16

Nid Storage

88

Hazard Potential

Low

Nid Height

16
       
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.