Lake Herman Mip #1 Reservoir Report
Nearby: Lake Herman Mip #2 Lake Herman Mip #3
Last Updated: December 13, 2025
Lake Herman Mip #1 is a dam located in South Dakota, specifically in Lake County, near the tributary of Lake Herman.
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Summary
Built in 1980 by the USDA NRCS, this earth dam stands at a height of 18 feet and has a storage capacity of 450 acre-feet. With a low hazard potential, the dam serves as a crucial water resource for the area, providing a normal storage capacity of 192 acre-feet.
Managed by the local government and regulated by the South Dakota Department of Environment and Natural Resources (DENR), Lake Herman Mip #1 plays a vital role in water management and flood control in the region. Despite its relatively low hazard potential, the dam's condition has not been rated, indicating a need for further assessment and monitoring. With a maximum discharge capacity of 1260 cubic feet per second, the dam serves as an important infrastructure for maintaining water quality and quantity in the local watershed.
As a key component of the water infrastructure in the area, Lake Herman Mip #1 underscores the importance of sustainable water resource management and climate resilience. With the potential for further evaluation and risk assessment, this dam remains a critical asset for ensuring water security and flood protection in Lake County, South Dakota.
Year Completed |
1980 |
Dam Length |
1013 |
Dam Height |
18 |
River Or Stream |
TRIB. LAKE HERMAN |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Drainage Area |
2 |
Nid Storage |
450 |
Hazard Potential |
Low |
Nid Height |
18 |
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.
Lake Herman Mip #1