Pactola Dike 1, located in Rapid City, South Dakota, is a federally owned earth dam constructed in 1959 by the Bureau of Reclamation.
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Humidity
Standing at a height of 115 feet, this structure serves as a critical component for managing water resources in the area, particularly along the Rapid Creek. With a storage capacity of 140,898 acre-feet and a surface area of 1,557 acres, Pactola Dike 1 plays a pivotal role in flood control and water supply management for the region.
Despite being under the jurisdiction of the Bureau of Reclamation, Pactola Dike 1 is not state regulated or permitted, showcasing the federal agency's responsibility in overseeing its operations, inspections, and regulatory aspects. The dam's hazard potential is classified as high, with a very high risk assessment rating, emphasizing the importance of maintaining its structural integrity and emergency preparedness protocols. With its controlled spillway and rock foundation, Pactola Dike 1 stands as a testament to engineering excellence and the critical role of water infrastructure in mitigating climate-related risks in the region.
As a key component of the water management system in Pennington County, Pactola Dike 1 not only provides flood protection but also contributes to the overall resilience of the community in the face of changing climate patterns. With its arch core design and significant storage capacity, this earth dam symbolizes the ongoing efforts to safeguard water resources and ensure sustainable development in South Dakota. As climate enthusiasts, it is essential to recognize the importance of infrastructure like Pactola Dike 1 in adapting to and mitigating the impacts of climate change on water resources and communities.
Year Completed |
1959 |
Dam Length |
1806 |
Dam Height |
115 |
River Or Stream |
RAPID CREEK |
Primary Dam Type |
Earth |
Surface Area |
1557 |
Hydraulic Height |
86 |
Drainage Area |
229 |
Nid Storage |
140898 |
Structural Height |
115 |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
115 |