Sd Noname 277 Reservoir Report
Nearby: Sd Noname 203 Sd Noname 199
Last Updated: December 5, 2025
Sd Noname 277 is a privately owned dam located in Haakon, South Dakota, along the TR-Cheyenne River.
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Summary
Built in 1969, this earth-type dam stands at a height of 28 feet and has a length of 300 feet. The dam has a storage capacity of 150 acre-feet and a maximum discharge of 3000 cubic feet per second, making it a crucial part of the local water resource infrastructure.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Sd Noname 277 is regulated, inspected, and enforced by the state to ensure its safety and compliance with regulations. Despite being categorized as having low hazard potential and having not been rated for condition assessment, the dam plays a vital role in water management for the region. With its primary purpose and associated structures not specified, further information is needed to fully understand the dam's role in water resource management and climate resilience efforts.
Representing a collaboration between private ownership and state oversight, Sd Noname 277 serves as a testament to the importance of effective regulation and maintenance of critical water infrastructure. As climate change continues to impact water resources, dams like Sd Noname 277 will play a crucial role in mitigating risks and ensuring sustainable water management practices for the future.
Year Completed |
1969 |
Dam Length |
300 |
Dam Height |
28 |
River Or Stream |
TR-CHEYENNE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
28 |
Nid Storage |
150 |
Hazard Potential |
Low |
Nid Height |
28 |
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 277