Sd Noname 202 Reservoir Report
Nearby: Hanson Dam No. 2 Hanson Dam
Last Updated: December 5, 2025
Sd Noname 202 is a private-owned dam located in Haakon, South Dakota, along the TR Cheyenne River.
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Summary
Built in 1952, this earth dam stands at a height of 25 feet and spans a length of 350 feet, with a storage capacity of 120 acre-feet. While it has a low hazard potential, its condition assessment remains unrated, indicating a need for further evaluation.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Sd Noname 202 is regulated, inspected, and enforced by the state. With a maximum discharge capacity of 600 cubic feet per second, this dam plays a crucial role in water resource management and flood control for the surrounding area. Despite lacking certain details like spillway type and outlet gates, the dam's overall purpose and functionality contribute to the sustainability of the local ecosystem.
Although Sd Noname 202 currently lacks specific risk assessment and emergency action plan details, its presence is essential for maintaining the water supply and ecological balance in the region. As a significant structure within the St. Paul District, this dam underscores the importance of proactive monitoring and management to ensure its long-term stability and effectiveness in a changing climate.
Year Completed |
1952 |
Dam Length |
350 |
Dam Height |
25 |
River Or Stream |
TR CHEYENNE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
120 |
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 202