Klostergaard Reservoir Report
Nearby: Stewart Jensen Dam
Last Updated: December 13, 2025
Klostergaard is a privately owned dam located in Clay County, South Dakota, along the Vermillion River.
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Summary
Built in 1967, this earth dam stands at a height of 28 feet and has a storage capacity of 100 acre-feet. With a maximum discharge of 798 cubic feet per second, Klostergaard plays a crucial role in managing water resources in the area.
Although the dam is classified as having a significant hazard potential, its condition has not been officially rated. Despite the lack of recent inspections, Klostergaard remains regulated by the South Dakota Department of Agriculture and Natural Resources, with permitting, inspection, and enforcement processes in place. The risk assessment for the dam is moderate, indicating a need for ongoing monitoring and potential risk management measures to ensure its continued safety and effectiveness.
Overall, Klostergaard serves as a key structure for water resource management in the region, providing flood control and water storage capabilities. As a part of the St. Paul District of the US Army Corps of Engineers, Klostergaard's role in protecting the surrounding area from potential flooding events is essential. With its history dating back to the 1960s, this dam continues to play a vital role in safeguarding the community and environment against water-related risks.
Year Completed |
1967 |
Dam Length |
250 |
Dam Height |
28 |
River Or Stream |
TR-VERMILLION RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
22 |
Drainage Area |
2 |
Nid Storage |
100 |
Hazard Potential |
Significant |
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.
Klostergaard