Herman #13 Reservoir Report
Nearby: Herman #14 Herman #15
Last Updated: December 13, 2025
Herman #13 is a privately owned dam located in Fort Pierre, South Dakota, along the TR-Bad River.
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Summary
Constructed in 1959 by the Natural Resources Conservation Service, this Earth-type dam stands at 27 feet in height and spans 405 feet in length. With a storage capacity of 46 acre-feet, the dam serves a vital role in regulating water flow and storage for the surrounding area.
Despite being classified as having a low hazard potential and not being rated for condition assessment, Herman #13 is regulated, permitted, inspected, and enforced by the South Dakota Department of Environment and Natural Resources. The dam is equipped with an outlet structure and has a maximum discharge capacity of 945 cubic feet per second. While the dam's emergency action plan status and risk assessment information are not available, its location in Jones County highlights its significance in water resource management and climate resilience efforts in the region.
With Congressman Dusty Johnson representing the region and the St. Paul District of the US Army Corps of Engineers overseeing federal funding and design, Herman #13 plays a crucial role in water resource infrastructure in South Dakota. As water resource and climate enthusiasts, understanding the details and regulatory framework surrounding dams like Herman #13 is essential for promoting sustainable water management practices and ensuring the safety and resilience of communities in the face of changing environmental conditions.
Year Completed |
1959 |
Dam Length |
405 |
Dam Height |
27 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
27 |
Nid Storage |
46 |
Hazard Potential |
Low |
Nid Height |
27 |
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 #13