Sd Noname 218 Reservoir Report

Last Updated: December 6, 2025

Sd Noname 218 is a private dam located in Haakon, South Dakota, along the TR-BAD RIVER.


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Summary

Built in 1952 by the Natural Resources Conservation Service, this earth dam stands at a height of 17 feet and stretches over 720 feet in length. With a storage capacity of 300 acre-feet, it serves the primary purpose of water resource management in the area.

Despite being state-regulated and meeting inspection requirements, Sd Noname 218 is rated as having a low hazard potential and is currently not assessed for its condition. While lacking certain emergency preparedness measures such as an Emergency Action Plan (EAP) and updated inundation maps, the dam continues to operate safely and effectively. With its close proximity to the St. Paul District of the US Army Corps of Engineers, it remains a vital structure for managing water resources in the region.

Enthusiasts of water resource management and climate resilience will find Sd Noname 218 to be a fascinating example of sustainable infrastructure. Its role in regulating water flow, storing runoff, and mitigating flood risks showcases the importance of dams in supporting ecosystems and communities. As efforts continue to enhance emergency preparedness and risk assessment, this dam stands as a testament to the ongoing evolution of water infrastructure in South Dakota.

Year Completed

1952

Dam Length

720

Dam Height

17

River Or Stream

TR-BAD RIVER

Primary Dam Type

Earth

Hydraulic Height

17

Nid Storage

300

Hazard Potential

Low

Nid Height

17
       
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.