Sd Noname 285 Reservoir Report
Nearby: Armstrong Irr. Dam Sd Noname 286
Last Updated: December 5, 2025
Sd Noname 285 is a privately-owned earth dam located in Haakon, South Dakota, along the TR-Cheyenne River offstream.
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Summary
Built in 1960 by the Natural Resources Conservation Service, this dam stands at 25 feet in height and spans 400 feet in length, providing a storage capacity of 130 acre-feet. With a low hazard potential and a condition assessment of "Not Rated," Sd Noname 285 plays a crucial role in water resource management in the area.
Managed by the South Dakota Department of Environment and Natural Resources, Sd Noname 285 is regulated, permitted, inspected, and enforced by state agencies to ensure its structural integrity and compliance with safety standards. Despite not having a designated primary purpose specified, this dam serves as a vital infrastructure for flood control, irrigation, and water supply in the region. With Dusty Johnson representing the area in Congress, the oversight and maintenance of Sd Noname 285 are under constant monitoring and evaluation.
As a significant component of the St. Paul District's water management system, Sd Noname 285 contributes to the overall resilience and sustainability of the local water resources. While its exact purposes and design details may vary, the dam's historical significance and functional importance cannot be understated for water resource and climate enthusiasts interested in understanding the intricate interplay between infrastructure, regulation, and environmental stewardship in South Dakota's water landscape.
Year Completed |
1960 |
Dam Length |
400 |
Dam Height |
25 |
River Or Stream |
TR-CHEYENNE RIVER OFFSTREAM |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
130 |
Hazard Potential |
Low |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Sd Noname 285