Sd Noname 87 Reservoir Report

Last Updated: December 5, 2025

Located in Haakon, South Dakota, Sd Noname 87 is a privately owned dam that was completed in 1950.


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Summary

This earth dam stands at a height of 17 feet and has a length of 450 feet, providing a storage capacity of 68 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.

Despite its age, Sd Noname 87 has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. The last inspection of the dam took place in October 1973, and it has not been modified in recent years. The dam's maximum discharge capacity is 630 cubic feet per second, making it a crucial structure for managing water resources in the area.

While the dam may not have associated structures or a detailed emergency action plan, its presence plays a vital role in water management for the region. With its strategic location on the Bad River Offstream, Sd Noname 87 serves as a key infrastructure for safeguarding against potential flooding events and ensuring water availability for various uses. For water resource and climate enthusiasts, Sd Noname 87 offers a fascinating case study in the intersection of human-made structures and environmental sustainability.

Year Completed

1950

Dam Length

450

Dam Height

17

River Or Stream

BADRIVEROFFSTREAM

Primary Dam Type

Earth

Hydraulic Height

17

Nid Storage

68

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.