Wolf Dam Reservoir Report
Nearby: Lake Herman Mip #3 Lake Herman Mip #2
Last Updated: December 12, 2025
Wolf Dam, located in South Dakota, was completed in 2009 and is a private earth dam standing at 26 feet tall and spanning 340 feet in length.
°F
°F
mph
Wind
%
Humidity
Summary
This structure serves the primary purpose of controlling the flow of TR Lake Madison, with a maximum storage capacity of 128 acre-feet and a normal storage level of 68 acre-feet. The dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR) and is designed by the USDA NRCS.
Despite its low hazard potential, Wolf Dam has a moderate risk rating of 3, highlighting the importance of ongoing risk management measures. With an uncontrolled spillway type and a maximum discharge capacity of 2235 cubic feet per second, the dam plays a crucial role in mitigating flood risks in the area. While the condition of the dam is currently not rated, regular inspections, emergency action plans, and risk assessments are essential to ensuring the safety and effectiveness of this vital water resource infrastructure.
Year Completed |
2009 |
Dam Length |
340 |
Dam Height |
26 |
River Or Stream |
TR LAKE MADISON |
Primary Dam Type |
Earth |
Hydraulic Height |
26 |
Drainage Area |
1 |
Nid Storage |
128 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
26 |
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.
Wolf Dam