Sd Noname 274 Reservoir Report

Last Updated: December 6, 2025

Sd Noname 274 is a privately owned dam in Haakon, South Dakota, with a low hazard potential and a height of 20 feet.


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Summary

This earth dam on the TR-Cheyenne River was completed in 1936 and has a storage capacity of 256 acre-feet. While the dam is state-regulated and inspected, its condition assessment is currently listed as "Not Rated" with the last inspection date recorded in 1990.

Located in the St. Paul District, Sd Noname 274 serves as a crucial structure for water resource management in the region. Despite its age, the dam continues to provide a valuable water source for the area, with a normal storage capacity of 72 acre-feet. With its strategic location and historical significance, this dam is a key component of the local water infrastructure and plays a vital role in safeguarding against potential flooding events in the region.

As climate change continues to impact water resources and infrastructure, the maintenance and monitoring of dams like Sd Noname 274 become increasingly important. With its regulatory oversight and state jurisdiction, this dam exemplifies the collaborative efforts required to ensure the resilience and sustainability of water resources in South Dakota. As we look towards the future, it is essential to prioritize the upkeep and modernization of these critical structures to adapt to changing environmental conditions and protect our communities from water-related risks.

Year Completed

1936

Dam Length

800

Dam Height

20

River Or Stream

TR-CHEYENNE RIVER

Primary Dam Type

Earth

Hydraulic Height

20

Nid Storage

256

Hazard Potential

Low

Nid Height

20
       
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.