Lake Dakotah Reservoir Report
Nearby: B. Deuter R. Allgaier
Last Updated: December 13, 2025
Lake Dakotah, located in Hand, South Dakota, stands as a testament to the engineering prowess of the Works Progress Administration (WPA) with its earth dam design that has been regulating the flow of TR-REE Creek since its completion in 1938.
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Summary
This state-regulated reservoir boasts a dam height of 31 feet and a storage capacity of 211 acre-feet, serving as a vital water resource in the region. Despite being classified with a low hazard potential, the dam's moderate risk assessment underscores the importance of ongoing monitoring and maintenance.
The lake's primary purpose and associated structures are not explicitly defined, but its significance in water management is evident through its state-permitted, inspected, and enforced regulatory status. With a spillway width of 36 feet and a maximum discharge capacity of 936 cubic feet per second, Lake Dakotah is equipped to handle significant water flow events. While its current condition is not rated, the dam's inspection frequency of three years ensures that any potential risks are promptly identified and addressed. Additionally, the presence of emergency action plans and inundation maps would further enhance the reservoir's risk management measures.
Managed by the South Dakota Department of Agriculture and Natural Resources, Lake Dakotah's strategic location and functional design contribute to its role in flood control and water supply for the surrounding area. As climate change continues to impact water resources, the reservoir remains a critical asset for the community, supported by a comprehensive risk assessment and management framework. For water resource and climate enthusiasts, Lake Dakotah serves as a fascinating case study in sustainable infrastructure development and resilience planning in the face of evolving environmental challenges.
Year Completed |
1938 |
Dam Length |
411 |
Dam Height |
31 |
River Or Stream |
TR-REE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
31 |
Nid Storage |
211 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
James R Near Redfield Sd
|
468cfs |
James R At Huron Sd
|
548cfs |
James R At Ashton Sd
|
418cfs |
White R Near Oacoma Sd
|
105cfs |
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.
Lake Dakotah