Lahontan, located in Fallon, Nevada, is a federal-owned dam designed by the Bureau of Reclamation and completed in 1915 with the primary purpose of flood risk reduction. It stands as an earth dam with a height of 120 feet and a hydraulic height of 115 feet, providing maximum storage capacity of 422,800 acre-feet. The dam also serves other purposes such as hydroelectric power generation, irrigation, and recreation, making it a vital water resource in the region.

With a hazard potential rated as high and a moderate risk assessment score of 3, Lahontan is a critical infrastructure that requires regular inspections and maintenance by the Bureau of Reclamation. The dam has a spillway width of 400 feet and associated structures for controlled water release, ensuring safety during high water events. While the condition assessment is currently not available, Lahontan's emergency action plan was last revised in 2017, showcasing the ongoing efforts to enhance its resilience to potential risks and emergencies.

As a key feature along the Carson River, Lahontan plays a significant role in managing water resources and mitigating flood risks in Churchill County. Its historical significance, coupled with its multi-purpose functionality, highlights the importance of sustainable water management practices and the need for continued monitoring and maintenance to ensure the safety and reliability of this essential infrastructure for the community and the environment.