Sd Noname 229 Reservoir Report

Last Updated: December 6, 2025

Sd Noname 229 is a privately owned dam located in Haakon, South Dakota, along the TR-BAD RIVER.


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Summary

Built in 1950 by the Natural Resources Conservation Service, this Earth-type dam stands at a height of 15 feet and has a length of 200 feet. It has a storage capacity of 92 acre-feet, with a maximum discharge of 660 cubic feet per second. While the dam is classified as low hazard potential and has not been rated for its condition, it is regulated by the South Dakota Department of Environment and Natural Resources.

The dam serves as a crucial water resource for the local community, with a primary purpose that is not specified in the available data. Despite its age, Sd Noname 229 has undergone no reported modifications or inspections in recent years. The emergency action plan for the dam is not up to date, and there is no risk assessment or management measures documented. Overall, while the dam plays a vital role in water management in the region, there are areas where improvements and updates are needed to ensure its continued safety and functionality for the surrounding area.

For water resource and climate enthusiasts, Sd Noname 229 presents an intriguing case study of a privately owned dam in South Dakota. The dam's location along the TR-BAD RIVER and its low hazard potential highlight the importance of proper regulation and maintenance to prevent potential risks. With no recent inspections or updates to the emergency action plan, there is room for improvement in ensuring the safety and reliability of this essential water infrastructure. As efforts to address climate change and water resource management continue to evolve, the story of Sd Noname 229 serves as a reminder of the ongoing challenges and opportunities in safeguarding our water resources for future generations.

Year Completed

1950

Dam Length

200

Dam Height

15

River Or Stream

TR-BAD RIVER

Primary Dam Type

Earth

Hydraulic Height

15

Nid Storage

92

Hazard Potential

Low

Nid Height

15
       
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.