County Line Dam, located in Custer, South Dakota, is a privately owned Earth dam built in 1945 on a tributary of the Cheyenne River.
Wind
Humidity
Standing at a height of 26 feet with a length of 950 feet, the dam has a storage capacity of 780 acre-feet, with a normal storage level of 660 acre-feet. Although not rated for its condition, the dam has a low hazard potential and is regulated by the South Dakota Department of Environment and Natural Resources.
Situated in a picturesque location, County Line Dam serves as a vital water resource for the surrounding area, providing irrigation for agriculture and supporting wildlife habitats. Despite its age, the dam continues to play a crucial role in managing water flow and ensuring water security in the region. With its close proximity to the Omaha District of the US Army Corps of Engineers, the dam is subject to regular inspection and enforcement to maintain its operational integrity.
As a significant infrastructure project in the region, County Line Dam represents a historical landmark that showcases the intersection of water resource management and climate resilience. With its strategic location and impact on the local ecosystem, the dam stands as a testament to the importance of sustainable water management practices in the face of changing climate conditions. Enthusiasts and experts alike can appreciate the role of County Line Dam in safeguarding water resources and adapting to the challenges of a shifting climate landscape.
Year Completed |
1945 |
Dam Length |
950 |
Dam Height |
26 |
River Or Stream |
TRIBUTARY CHEYENNE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
26 |
Nid Storage |
780 |
Hazard Potential |
Low |
Nid Height |
26 |
Cheyenne R Near Buffalo Gap Sd
|
103cfs |
Cheyenne River At Redshirt
|
311cfs |
Beaver Cr Near Buffalo Gap Sd
|
11cfs |
Battle Cr Below Hermosa Sd
|
8cfs |
White R Near Oglala Sd
|
101cfs |
Horsehead Cr At Oelrichs Sd
|
0cfs |