Chambliss Number 1 Reservoir Report

Last Updated: December 8, 2025

Chambliss Number 1 is a privately owned dam located in Fort Pierre, South Dakota, along the TR-Bad River.


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Summary

Constructed in 1958 by the Natural Resources Conservation Service, this earth dam stands at a height of 25 feet and spans a length of 552 feet. With a storage capacity of 99 acre-feet and a maximum discharge of 750 cubic feet per second, Chambliss Number 1 plays a crucial role in water resource management in the region.

Despite being rated as having a low hazard potential and not currently assessed for its condition, Chambliss Number 1 falls under the regulatory jurisdiction of the South Dakota Department of Environment and Natural Resources. The dam is permitted, inspected, and enforced by the state agency, ensuring its compliance with safety standards and regulations. As a key infrastructure for water storage and flood control, Chambliss Number 1 serves as a vital component of the local water management system.

For water resource and climate enthusiasts, Chambliss Number 1 presents an interesting case study of a privately owned dam in a rural setting. With its historical significance and ongoing regulatory oversight, this structure exemplifies the intersection of human-made infrastructure and natural resource management. As efforts to address climate change and enhance water security continue, understanding the role and management of dams like Chambliss Number 1 becomes increasingly important for sustainable water resource practices.

Year Completed

1958

Dam Length

552

Dam Height

25

River Or Stream

TR-BAD RIVER

Primary Dam Type

Earth

Hydraulic Height

25

Nid Storage

99

Hazard Potential

Low

Nid Height

25
       
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.