Nolan Dam Reservoir Report
Nearby: County Line Dam Barta Crooked Dam
Last Updated: December 5, 2025
Nolan Dam, located in South Dakota along Trib.
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Summary
1st Black Canyon, is a federal-owned structure completed in 1992 with a primary dam type of Earth. Standing at 25 feet in height and stretching 510 feet in length, the dam boasts a maximum storage capacity of 94 acre-feet and a normal storage level of 43 acre-feet. With a low hazard potential and a current condition assessment of "Not Rated," Nolan Dam serves as a vital resource for water management and conservation in the region.
Managed by the Omaha District of the US Army Corps of Engineers, Nolan Dam plays a crucial role in regulating water flow and providing essential storage for the surrounding area. With a maximum discharge capacity of 570 cubic feet per second, the dam ensures flood control and water supply for downstream communities. Despite not being state-regulated or inspected, the dam's stable condition and low hazard potential indicate a successful track record in maintaining safety and efficiency.
As a key feature in water resource management, Nolan Dam contributes to the environmental sustainability and climate resilience of Fall River, South Dakota. With its strategic location and capacity for water storage, the dam plays a significant role in mitigating the impact of extreme weather events and supporting the overall health of the local ecosystem. For water resource and climate enthusiasts, Nolan Dam stands as a symbol of effective infrastructure that balances the needs of both human communities and the natural environment.
Year Completed |
1992 |
Dam Length |
510 |
Dam Height |
25 |
River Or Stream |
TRIB. 1ST BLACK CANYON |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
94 |
Hazard Potential |
Low |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cheyenne R Near Buffalo Gap Sd
|
103cfs |
Beaver Cr Near Buffalo Gap Sd
|
11cfs |
Cheyenne River At Redshirt
|
311cfs |
White R Near Oglala Sd
|
101cfs |
Battle Cr Below Hermosa Sd
|
8cfs |
Horsehead Cr At Oelrichs Sd
|
0cfs |
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.
Nolan Dam