Double Dam Reservoir Report
Nearby: Williams No 3 (Nid) Williams 783
Last Updated: December 11, 2025
Double Dam, also known as Sand Creek No.
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Summary
1, is a Federal-owned structure located in Chamberlain, South Dakota. Constructed in 1938, this Earth-type dam stands at a height of 21 feet and spans a length of 250 feet along the Dry Draw river or stream. It serves multiple purposes, including fire protection, stock, small fish pond, and fish and wildlife habitat, with a storage capacity of 120 acre-feet.
Managed by the Forest Service, Double Dam has a low hazard potential and a moderate risk assessment rating. Despite not being state-regulated, the dam has not been rated for its condition and lacks an Emergency Action Plan. The last inspection conducted on the dam was in 2006, with an inspection frequency of 10 years. While the dam's risk management measures are not specified, its location and purpose make it an essential component for water resource management in the region.
Overall, Double Dam plays a crucial role in providing water resources for fire protection and supporting local wildlife in the area. As an Earth-type structure with minimal associated risks, its maintenance and inspection are essential to ensure its continued functionality and safety for the surrounding community. Although it may not be as high-profile as other dams, its significance in water resource management and climate resilience should not be overlooked by enthusiasts in the field.
Year Completed |
1938 |
Dam Length |
250 |
Dam Height |
21 |
River Or Stream |
DRY DRAW |
Primary Dam Type |
Earth |
Hydraulic Height |
21 |
Drainage Area |
2 |
Nid Storage |
120 |
Structural Height |
21 |
Hazard Potential |
Low |
Nid Height |
21 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Bad R Near Fort Pierre Sd
|
7cfs |
White R Near Oacoma Sd
|
105cfs |
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.
Double Dam