Sd Noname 226 Reservoir Report

Last Updated: December 6, 2025

Sd Noname 226 is a privately owned dam located in Haakon, South Dakota, along the Mitchell Creek.


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Summary

This Earth-type dam stands at a height of 16 feet and has a length of 262 feet. Completed in 1956, it has a storage capacity of 57 acre-feet, with a normal storage level of 26 acre-feet. The dam has a significant hazard potential and is regulated by the South Dakota Department of Environment and Natural Resources.

Managed by the Natural Resources Conservation Service, Sd Noname 226 is equipped with state permitting, inspection, and enforcement measures to ensure its safety and compliance with regulations. While the condition assessment is currently not rated, the dam's emergency action plan status and risk management measures remain unspecified. With a historically modified structure, the dam plays a crucial role in water resource management and flood control in the region.

Located in a scenic area near MIDLAND, Sd Noname 226 serves as a vital infrastructure for the local community and contributes to the overall water resource management efforts in South Dakota. As climate change continues to impact water availability and extreme weather events, the significance of maintaining and monitoring dams like Sd Noname 226 becomes increasingly important for ensuring the resilience of water resources in the region.

Year Completed

1956

Dam Length

262

Dam Height

16

River Or Stream

MITCHELL CREEK

Primary Dam Type

Earth

Hydraulic Height

16

Nid Storage

57

Hazard Potential

Significant

Nid Height

16
       
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.