Snow Dam Reservoir Report
Nearby: Linker Dam Hamill Dam
Last Updated: December 12, 2025
Snow Dam, located in Tripp, South Dakota, is a state-regulated earth dam built in 1934 on the White River off stream.
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Summary
Standing at a height of 23 feet and with a length of 980 feet, it serves multiple purposes including flood control, water storage, and irrigation. The dam has a maximum storage capacity of 1460 acre-feet and a normal storage level of 548 acre-feet, supporting a drainage area of 31 square miles.
Despite being classified as having a low hazard potential, Snow Dam undergoes regular inspections every three years to ensure its structural integrity and safety. The dam has not been rated for its condition assessment, but emergency action plans are in place, although details on their preparation and last revision date are not available. With Dusty Johnson (R) as the representative for the area, Snow Dam plays a crucial role in water resource management in the region, providing essential support for local agriculture and environmental conservation efforts.
Year Completed |
1934 |
Dam Length |
980 |
Dam Height |
23 |
River Or Stream |
WHITE RIVER OFF STREAM |
Primary Dam Type |
Earth |
Hydraulic Height |
23 |
Drainage Area |
31 |
Nid Storage |
1460 |
Hazard Potential |
Low |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
White R Near Oacoma Sd
|
105cfs |
Keya Paha R Near Keyapaha Sd
|
33cfs |
Keya Paha R At Wewela Sd
|
54cfs |
Platte Creek Near Platte
|
3cfs |
White River Near White River
|
42cfs |
Little White R Below White River Sd
|
141cfs |
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.
Snow Dam