Summary
Managed by the Department of the Interior's Bureau of Indian Affairs, Antelope serves as a vital water resource on Antelope Creek. With a structural height of 25 feet and a length of 2050 feet, the dam plays a crucial role in controlling water flow and ensuring efficient irrigation in the region.
Despite its age, Antelope is considered to have a high hazard potential and a very high risk assessment rating. While the condition assessment is currently not available, the last inspection in 2012 revealed the need for regular monitoring and maintenance. The emergency action plan (EAP) for the dam was last revised in 2005, and the dam is inspected every 5 years to assess its safety and integrity. With Dusty Johnson (R) as the representative for the area, the management and regulation of Antelope are under the jurisdiction of the Bureau of Indian Affairs, emphasizing the importance of sustainable water resource management in the region.
As a crucial infrastructure for irrigation and water management in South Dakota, Antelope Dam stands as a testament to the importance of maintaining and monitoring aging water structures. With its controlled spillway and primary purpose of irrigation, the dam plays a pivotal role in the region's agricultural activities. However, its high hazard potential and risk assessment highlight the need for continued vigilance and proactive measures to ensure the safety and efficiency of this vital water resource in the face of changing climate patterns and increasing water demand.
Year Completed |
1939 |
Dam Length |
2050 |
River Or Stream |
ANTELOPE CREEK |
Primary Dam Type |
Concrete |
Structural Height |
25 |
Hazard Potential |
High |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little White R Near Rosebud Sd
|
96cfs |
Little White R Below White River Sd
|
141cfs |
Keya Paha R Near Keyapaha Sd
|
33cfs |
White River Near White River
|
42cfs |
Niobrara River Near Sparks
|
934cfs |
Little White R Near Vetal Sd
|
145cfs |
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.
Antelope