Sd Noname 124 Reservoir Report

Last Updated: December 5, 2025

Sd Noname 124 is a private earth dam located in Pennington, South Dakota, along the TR-RAPID CREEK.


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Summary

Constructed in 1950, this dam stands at a height of 9 feet and has a storage capacity of 72 acre-feet. With a low hazard potential and a "Not Rated" condition assessment, Sd Noname 124 is regulated and inspected by the South Dakota Department of Environment and Natural Resources.

Managed by the Natural Resources Conservation Service, Sd Noname 124 serves as a vital water resource in the region, providing a normal storage capacity of 36 acre-feet. Although the dam has not been rated for its condition, it meets state permitting and inspection requirements, ensuring its safety and functionality for the surrounding community. The dam's maximum discharge capacity is 360 cubic feet per second, helping to mitigate flood risks in the area.

Situated in a picturesque location with a latitude of 43.975 and longitude of -103.075, Sd Noname 124 plays a crucial role in water management and climate resilience in South Dakota. With Dusty Johnson (R) as the Congressional Representative for the region, this dam represents a collaborative effort between private owners, state regulators, and federal agencies to safeguard water resources and protect against potential hazards.

Year Completed

1950

Dam Length

570

Dam Height

9

River Or Stream

TR-RAPID CREEK

Primary Dam Type

Earth

Hydraulic Height

9

Nid Storage

72

Hazard Potential

Low

Nid Height

9
       
Seasonal Comparison

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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.