C. Bennett Reservoir Report
Nearby: Tribe No.9 R. Fields No.4
Last Updated: December 6, 2025
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Summary
Bennett is a private dam located in Ziebach, South Dakota, along the TR CHEYENNE river. Built in 1942, this earth dam stands at a height of 17 feet and stretches across 700 feet, providing a maximum storage capacity of 179 acre-feet. Despite its low hazard potential, C. Bennett is regulated by the South Dakota Department of Environment and Natural Resources, with state oversight including permitting, inspection, and enforcement.
Owned privately and situated within the St. Paul District of the US Army Corps of Engineers, C. Bennett plays a crucial role in water resource management in the region. Its primary purpose and associated structures are not specified, but the dam's construction and operation are subject to state jurisdiction and regulatory agencies. With a normal storage capacity of 104 acre-feet and a maximum discharge of 1575 cubic feet per second, C. Bennett contributes to the management of water flow and storage in the area.
For water resource and climate enthusiasts, C. Bennett offers a fascinating case study in the intersection of infrastructure, regulation, and environmental stewardship. As a privately owned dam with state oversight, its role in flood control, water supply, and ecosystem management highlights the complex dynamics that shape our water resources. With a rich history dating back to the early 20th century, C. Bennett stands as a testament to the ongoing efforts to balance human needs with the protection of our natural environment.
Year Completed |
1942 |
Dam Length |
700 |
Dam Height |
17 |
River Or Stream |
TR CHEYENNE |
Primary Dam Type |
Earth |
Hydraulic Height |
17 |
Nid Storage |
179 |
Hazard Potential |
Low |
Nid Height |
17 |
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.
C. Bennett