Mundt Dam Reservoir Report
Nearby: Ruben Larosh Gorman Dam
Last Updated: December 13, 2025
Mundt Dam, located in Sully County, South Dakota, is a privately owned structure designed by the Works Progress Administration (WPA) and completed in 1937.
°F
°F
mph
Wind
%
Humidity
Summary
This earth dam stands at a height of 25 feet and has a length of 526 feet, creating a storage capacity of 354 acre-feet of water in the surrounding drainage area of 12 square miles. The dam's primary purpose is not specified, but it serves as a crucial element in managing water resources in the region, with a maximum discharge capability of 1350 cubic feet per second.
While Mundt Dam has a low hazard potential, its condition assessment is currently listed as "Not Rated." The dam features an uncontrolled spillway with a width of 100 feet, and there are no outlet gates associated with the structure. The risk assessment for Mundt Dam is moderate, with a risk characterization of 3. Despite the lack of detailed information on emergency action plans and risk management measures, the dam remains an essential component of water resource management in the area, under the regulatory jurisdiction of the South Dakota Department of Agriculture and Natural Resources (DANR).
With its historical significance as a WPA project and its ongoing role in water resource management in South Dakota, Mundt Dam stands as a testament to the importance of infrastructure in mitigating the impacts of climate change on water availability and quality. As climate enthusiasts and water resource experts continue to monitor and assess the condition of Mundt Dam, its future maintenance and potential upgrades will play a crucial role in ensuring the safety and sustainability of the surrounding communities and ecosystems.
Year Completed |
1937 |
Dam Length |
526 |
Dam Height |
25 |
River Or Stream |
TR MISSONot RatedI |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Drainage Area |
12 |
Nid Storage |
354 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
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.
Mundt Dam