Sd Noname 89 Reservoir Report

Last Updated: December 5, 2025

Sd Noname 89 is a privately owned dam located in Haakon, South Dakota, with a low hazard potential.


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Summary

Built in 1959, this earth dam stands at 17 feet in height and spans 670 feet in length, with a storage capacity of 81 acre-feet. The dam is regulated by the South Dakota Department of Agriculture and Natural Resources, ensuring that it meets state inspection and enforcement standards.

Managed by the Natural Resources Conservation Service, Sd Noname 89 plays a crucial role in storing water for agricultural and environmental purposes in the region. Its location near the Bad River Offstream provides essential water resources for the surrounding area, with a maximum discharge capacity of 1,470 cubic feet per second. Despite being constructed over six decades ago, the dam's condition is currently not rated, highlighting the need for ongoing monitoring and maintenance to ensure its continued safety and functionality.

This dam, while not federally owned, serves as a vital piece of infrastructure for water resource management in South Dakota. With its state-regulated status and compliance with inspection and enforcement protocols, Sd Noname 89 showcases the importance of private ownership in maintaining critical water infrastructure for the community's benefit. As climate change impacts water availability, this dam's role in storing and regulating water flow becomes increasingly significant for ensuring sustainable water resource management in the region.

Year Completed

1959

Dam Length

670

Dam Height

17

River Or Stream

BADRIVEROFFSTREAM

Primary Dam Type

Earth

Hydraulic Height

17

Nid Storage

81

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.