Sd Noname 145 Reservoir Report
Last Updated: December 5, 2025
Sd Noname 145 is a privately owned dam located in Haakon, South Dakota, along the TR-CHEYENNE RIVER.
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Summary
Built in 1958, this earth dam stands at a height of 12 feet and stretches 800 feet in length, with a storage capacity of 96 acre-feet. Despite its low hazard potential and current "Not Rated" condition assessment, the dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR), with state permitting, inspection, and enforcement in place to ensure its safety and compliance.
Managed by a private owner, Sd Noname 145 plays a crucial role in regulating water flow and providing storage for the surrounding area. With a maximum discharge capacity of 1500 cubic feet per second, the dam serves as a key infrastructure for water resource management in the region. Although no specific primary purpose is listed, the dam's existence and maintenance are essential for protecting against potential flooding events and ensuring water security for local communities.
Situated within the St. Paul District of the US Army Corps of Engineers, Sd Noname 145 is part of the larger network of dams and structures that contribute to water resource management in the region. While currently not rated for condition assessment, the dam's low hazard potential and state regulation indicate a commitment to its safety and functionality. As water resource and climate enthusiasts, understanding the role of dams like Sd Noname 145 is crucial for sustainable water management practices and environmental resilience.
Year Completed |
1958 |
Dam Length |
800 |
Dam Height |
12 |
River Or Stream |
TR-CHEYENNE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
12 |
Nid Storage |
96 |
Hazard Potential |
Low |
Nid Height |
12 |
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 145