Teepee Reservoir Report

Last Updated: December 6, 2025

Teepee, located in Harding, South Dakota, is a privately owned Earth dam constructed in 1950 on the Trib N Fork Grand River.


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Summary

Managed by the Natural Resources Conservation Service, Teepee stands at a height of 20 feet and has a storage capacity of 60 acre-feet. With a low hazard potential, the dam has not been rated for its condition assessment.

Although Teepee is not owned or funded by any federal agencies, it is regulated, permitted, inspected, and enforced by the South Dakota Department of Environment and Natural Resources. The dam plays a crucial role in water resource management in the area, providing irrigation water storage for agricultural purposes. With a maximum discharge capacity of 1155 cubic feet per second, Teepee serves as a vital infrastructure for the surrounding community.

While Teepee has not been assessed for its emergency action plan or risk management measures, its strategic location and design contribute to the overall water resource management and climate resilience in the region. As a key structure on the Trib N Fork Grand River, Teepee showcases the importance of private ownership in maintaining and safeguarding water resources for future generations.

Year Completed

1950

Dam Length

490

Dam Height

20

River Or Stream

TRIB N FORK GRAND RIVER

Primary Dam Type

Earth

Hydraulic Height

20

Nid Storage

60

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.
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Area Campgrounds