Wiesner Dam 1 Reservoir Report
Nearby: Weisner Dam Cable Dams
Last Updated: December 13, 2025
Wiesner Dam 1 is a privately owned earth dam located in Buffalo, South Dakota, completed in 1951.
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Summary
It stands at a height of 26 feet and has a maximum storage capacity of 28 acre-feet. The dam plays a crucial role in water resource management in the region, with a normal storage capacity of 19 acre-feet and a maximum discharge of 660 cubic feet per second.
Managed by the Natural Resources Conservation Service, Wiesner Dam 1 is regulated by the South Dakota Department of Environment and Natural Resources. Despite being classified as a low hazard potential structure, the dam's condition assessment is currently unrated. While there are no associated structures or locks, the dam serves the primary purpose of water storage and management for the surrounding area.
Enthusiasts of water resources and climate will find Wiesner Dam 1 a fascinating site to explore, with its historical significance, engineering design, and contribution to the local water supply. The dam's presence underscores the importance of sustainable water management practices and the need for ongoing inspection and maintenance to ensure its continued safety and functionality in the face of changing climate conditions.
Year Completed |
1951 |
Dam Length |
335 |
Dam Height |
26 |
River Or Stream |
TR-MISSONot RatedI |
Primary Dam Type |
Earth |
Hydraulic Height |
26 |
Nid Storage |
28 |
Hazard Potential |
Low |
Nid Height |
26 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
White R Near Oacoma Sd
|
105cfs |
Platte Creek Near Platte
|
3cfs |
Firesteel Cr Near Mount Vernon Sd
|
0cfs |
James R At Huron Sd
|
548cfs |
James R Near Forestburg Sd
|
560cfs |
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.
Wiesner Dam 1