Williams Dam Reservoir Report
Last Updated: December 13, 2025
Williams Dam, located in South Dakota on the Tributary Snake Creek, was completed in 1994 and stands at a height of 12 feet with a length of 370 feet.
°F
°F
mph
Wind
%
Humidity
Summary
Owned privately, the dam is regulated by the state agency DENR and is subject to state inspection and enforcement. With a storage capacity of 135 acre-feet and a low hazard potential, Williams Dam serves as a crucial infrastructure for water resource management in the region.
Despite being an earth dam, Williams Dam has not been rated for its condition assessment. The dam's primary purpose and associated structures are not specified in the data, suggesting a degree of confidentiality or complexity in its operations. With a maximum discharge capacity of 900 cubic feet per second, the dam plays a significant role in flood control and water supply management for the local community.
While Williams Dam may not have a designated Emergency Action Plan (EAP) or updated inspection dates, its low hazard potential indicates a lower risk profile compared to other dams. Climate and water resource enthusiasts can appreciate the strategic location and design of Williams Dam in mitigating potential flooding and ensuring the efficient utilization of water resources in the region.
Year Completed |
1994 |
Dam Length |
370 |
Dam Height |
12 |
River Or Stream |
TRIB. SNAKE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
12 |
Drainage Area |
11 |
Nid Storage |
135 |
Hazard Potential |
Low |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Foot Creek Near Aberdeen
|
0cfs |
Elm R At Westport Sd
|
12cfs |
James R Near Stratford Sd
|
409cfs |
James R At Ashton Sd
|
418cfs |
James R At Columbia Sd
|
268cfs |
James R Near Redfield Sd
|
468cfs |
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.
Williams Dam