Sd Noname 96 Reservoir Report

Last Updated: December 13, 2025

Sd Noname 96 is a privately owned earth dam located in Buffalo, South Dakota, with a height of 28 feet and a length of 380 feet.


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Summary

Completed in 1946, this dam has a storage capacity of 20 acre-feet and a maximum discharge of 150 cubic feet per second. While its hazard potential is rated as low, its condition assessment is marked as 'Not Rated', indicating a need for further evaluation.

Managed by the South Dakota Department of Environment and Natural Resources, Sd Noname 96 is regulated, permitted, inspected, and enforced by the state. Despite its condition assessment lacking a rating, the dam meets state jurisdiction requirements and poses a low risk. The dam's emergency action plan status, inundation maps, and risk assessment details are currently not available, suggesting a need for updated emergency protocols and risk management measures.

With its primary purpose and associated structures undisclosed, Sd Noname 96 remains a critical piece of infrastructure in the region. Its location in Buffalo, South Dakota, and association with the St. Paul District of the US Army Corps of Engineers highlight its significance in water resource management. Climate and water resource enthusiasts will find Sd Noname 96 a fascinating case study in dam infrastructure and regulatory oversight in South Dakota.

Year Completed

1946

Dam Length

380

Dam Height

28

River Or Stream

TR-MISSONot RatedI

Primary Dam Type

Earth

Hydraulic Height

28

Nid Storage

20

Hazard Potential

Low

Nid Height

28
       
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.