Herman #6 Reservoir Report
Nearby: Herman #10 Herman #5
Last Updated: December 8, 2025
Herman #6 is a privately owned dam located in Fort Pierre, South Dakota, along the TR-Bad River.
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Summary
Built in 1962 by the Natural Resources Conservation Service, this earth dam stands at a height of 29 feet and has a storage capacity of 26 acre-feet. The dam serves the primary purpose of water resource management, with a low hazard potential and a condition assessment that is currently not rated.
Despite being privately owned, Herman #6 is regulated by the South Dakota Department of Environment and Natural Resources, with permitting, inspection, and enforcement measures in place to ensure its safety and compliance with state regulations. The dam's location in Jones County, South Dakota, and its association with the St. Paul District of the US Army Corps of Engineers further highlight its significance in the local water resource management infrastructure.
With a maximum discharge capacity of 1,386 cubic feet per second, Herman #6 plays a crucial role in flood control and water storage in the region. Its strategic placement along the Bad River tributary underscores its importance in mitigating the impact of extreme weather events and climate variability on the surrounding area. As a key component of the state's water resource management system, Herman #6 exemplifies the intersection of private ownership, public regulation, and environmental stewardship in ensuring the sustainability and resilience of South Dakota's water infrastructure.
Year Completed |
1962 |
Dam Length |
399 |
Dam Height |
29 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
29 |
Nid Storage |
26 |
Hazard Potential |
Low |
Nid Height |
29 |
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.
Herman #6