Sd Noname 17 Reservoir Report

Last Updated: December 13, 2025

Sd Noname 17 is a privately owned dam located in Haakon, South Dakota, along the TR-Bad River.


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Summary

Built in 1955, this earth dam stands at a height of 15 feet and stretches 740 feet in length, with a storage capacity of 60 acre-feet. While it is regulated by the South Dakota Department of Environment and Natural Resources (DENR), it has not been rated for condition assessment and is considered to have a low hazard potential.

Despite its age, Sd Noname 17 has not undergone any modifications or inspections in recent years, and its emergency action plan (EAP) is not up to date. The dam is equipped with outlet gates, but specific details about spillways, locks, and other associated structures are not provided. The risk assessment and management measures for this dam are also unknown, highlighting potential vulnerabilities that may need to be addressed by the owner in the future.

With limited information available on its current condition and emergency preparedness, Sd Noname 17 serves as a reminder of the importance of regular inspections and maintenance for ensuring the safety and resilience of water infrastructure. Water resource and climate enthusiasts may find this case study intriguing, as it raises questions about the effectiveness of regulatory oversight and the need for proactive risk mitigation strategies in the face of increasing climate variability.

Year Completed

1955

Dam Length

740

Dam Height

15

River Or Stream

TR-BAD RIVER

Primary Dam Type

Earth

Hydraulic Height

15

Nid Storage

60

Hazard Potential

Low

Nid Height

15
       
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.