C.W. Stewart Reservoir Report
Nearby: C. Iverson Hnot Ratedley
Last Updated: December 13, 2025
C.W.
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Summary
Stewart is a privately owned earth dam located in Potter, South Dakota, along the TR-Cheyenne Creek. Completed in 1942, this dam stands at 18 feet high with a length of 360 feet, providing a storage capacity of 72 acre-feet for water resource management. With a low hazard potential and a current condition assessment of "Not Rated," this structure plays a vital role in regulating water flow and ensuring water security in the region.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), C.W. Stewart is subject to state regulations, permitting, inspection, and enforcement to maintain its integrity and functionality. The dam's maximum discharge capacity of 900 cubic feet per second ensures controlled water release during peak flow periods, while its normal storage capacity of 31 acre-feet helps in mitigating flood risks and supporting irrigation needs for agricultural lands in the area. With its strategic location and design, C.W. Stewart contributes significantly to water resource sustainability and climate resilience efforts in the region.
Although not rated for condition assessment currently, C.W. Stewart remains a key component of water infrastructure in South Dakota, reflecting the state's commitment to effective water management and environmental stewardship. With its historical significance and functional importance, this earth dam serves as a testament to the enduring value of water resources and the critical role they play in shaping the local landscape and supporting community well-being.
Year Completed |
1942 |
Dam Length |
360 |
Dam Height |
18 |
River Or Stream |
TR-CHEYENNE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Nid Storage |
72 |
Hazard Potential |
Low |
Nid Height |
18 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Moreau R Near Whitehorse Sd
|
35cfs |
Oak Cr Near Wakpala Sd
|
10cfs |
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.
C.W. Stewart