Trail City Dam Reservoir Report
Nearby: Pius Aberle H. Hulm
Last Updated: December 13, 2025
Trail City Dam, also known as Trail City Rr Lake, is a vital water resource infrastructure owned by the Tribal Government in South Dakota.
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Summary
Completed in 1935, this earth-type dam stands at a height of 24 feet and spans a length of 650 feet along Snake Creek. Its primary purpose is to serve as a water supply for various needs, including fire protection, livestock, and small fish ponds. With a storage capacity of 500 acre-feet, the dam provides a normal storage capacity of 234 acre-feet and covers a surface area of 78 acres.
Situated in Corson County, South Dakota, Trail City Dam plays a significant role in water management and supply in the region. With a low hazard potential and a condition assessment of "Not Rated," the dam serves the community with reliability and efficiency. Despite not being state-regulated or inspected, the dam continues to support the local ecosystem and economy by providing essential water resources. As a key feature in the landscape, Trail City Dam stands as a testament to the importance of sustainable water infrastructure in the face of changing climate patterns and resource demands.
Year Completed |
1935 |
Dam Length |
650 |
Dam Height |
24 |
River Or Stream |
SNAKE CREEK |
Primary Dam Type |
Earth |
Surface Area |
78 |
Hydraulic Height |
24 |
Nid Storage |
500 |
Structural Height |
24 |
Hazard Potential |
Low |
Nid Height |
24 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Grand R At Little Eagle Sd
|
47cfs |
Moreau R Near Whitehorse Sd
|
35cfs |
Oak Cr Near Wakpala Sd
|
10cfs |
Cedar Creek Nr Raleigh
|
20cfs |
Cannonball River Nr Raleigh
|
40cfs |
Beaver Creek Bl Linton
|
39cfs |
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.
Trail City Dam