Alex Krischen Reservoir Report
Nearby: Chapman Dam Morris Hamilton
Last Updated: December 6, 2025
Alex Krischen is a privately owned dam located in Perkins, South Dakota, along the TR South Grand River.
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Summary
Built in 1951, this earth dam stands at a height of 20 feet and has a length of 650 feet. With a storage capacity of 120 acre-feet and a maximum discharge of 500 cubic feet per second, Alex Krischen serves as a vital structure for managing water resources in the area.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Alex Krischen is regulated and inspected by the state to ensure its safety and compliance with regulations. Despite being categorized as having a low hazard potential and being of earth construction type, the dam's condition assessment is currently marked as "Not Rated." With its emergency action plan status and risk management measures yet to be determined, there is a need for further evaluation and preparedness to mitigate potential risks associated with the dam.
Water resource and climate enthusiasts can appreciate the significance of Alex Krischen in the region's water management system. As climate change continues to impact water resources, it is crucial to monitor and assess the condition of dams like Alex Krischen to ensure their resilience and effectiveness in the face of evolving environmental challenges.
Year Completed |
1951 |
Dam Length |
650 |
Dam Height |
20 |
River Or Stream |
TR SOUTH GRAND RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
120 |
Hazard Potential |
Low |
Nid Height |
20 |
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.
Alex Krischen