Hickman No.1 Reservoir Report
Nearby: Hickman No.2 Pothast Dam
Last Updated: December 6, 2025
Hickman No.1 is a private earth dam located in Ziebach, South Dakota, along the TR CHEYENNE river.
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Summary
Constructed in 1963 by the Natural Resources Conservation Service, this dam stands at a height of 29 feet and has a storage capacity of 361 acre-feet. With a low hazard potential and a condition assessment of "Not Rated," this dam plays a crucial role in water resource management in the region.
Despite being privately owned, Hickman No.1 is regulated by the South Dakota Department of Environment and Natural Resources, with state permitting, inspection, and enforcement processes in place. The dam is designed to handle a maximum discharge of 2440 cubic feet per second and has a normal storage capacity of 53 acre-feet. Its location within St. Paul District and close proximity to Dusty Johnson's Congressional district highlight its significance in the local water management infrastructure.
For water resource and climate enthusiasts, Hickman No.1 serves as a prime example of a modest yet essential structure contributing to flood control and water storage in South Dakota. Its existence underscores the importance of proper dam maintenance and regulation to ensure the safety and sustainability of water resources in the region. As interest in climate change adaptation grows, understanding the role of dams like Hickman No.1 becomes increasingly crucial for effective water resource management strategies.
Year Completed |
1963 |
Dam Length |
390 |
Dam Height |
29 |
River Or Stream |
TR CHEYENNE |
Primary Dam Type |
Earth |
Hydraulic Height |
29 |
Nid Storage |
361 |
Hazard Potential |
Low |
Nid Height |
29 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cheyenne R Near Plainview Sd
|
0cfs |
Moreau R Near Whitehorse Sd
|
35cfs |
Moreau R Near Faith Sd
|
14cfs |
Bad R Near Fort Pierre Sd
|
7cfs |
Grand R At Little Eagle Sd
|
47cfs |
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.
Hickman No.1