Sd Noname 51 Reservoir Report

Last Updated: December 6, 2025

Sd Noname 51 is a private earth dam located in Haakon County, South Dakota, along the TR-BAD RIVER.


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Summary

Built in 1960, this dam stands at a height of 24 feet and has a storage capacity of 86 acre-feet. It serves a significant purpose in water resource management, with a maximum discharge capacity of 1050 cubic feet per second.

Managed by the Natural Resources Conservation Service, Sd Noname 51 is regulated by the South Dakota Department of Environment and Natural Resources. With a hazard potential rated as significant, the dam has not been conditionally assessed but is subject to state inspections, permitting, and enforcement. The dam's emergency action plan status and risk management measures are currently not rated or documented, indicating potential areas for improvement in ensuring the safety and reliability of this water resource infrastructure.

Located in a scenic area near Philip, South Dakota, Sd Noname 51 plays a crucial role in protecting downstream areas from flooding and ensuring water availability for various uses. Despite its age, the dam continues to serve its purpose effectively, highlighting the importance of ongoing monitoring and maintenance to safeguard against potential risks and ensure the resilience of water resources in the region.

Year Completed

1960

Dam Length

380

Dam Height

24

River Or Stream

TR-BAD RIVER

Primary Dam Type

Earth

Hydraulic Height

24

Nid Storage

86

Hazard Potential

Significant

Nid Height

24
       
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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.