Located in Butler, Kansas, the 8 - North Sector dam plays a crucial role in flood risk reduction along the West Branch Walnut River. Completed in 2006, this earth dam stands 27 feet tall and spans 2572 feet, providing storage for up to 1972 acre-feet of water. The dam's spillway, with a width of 100 feet, helps regulate maximum discharge rates of up to 5777 cubic feet per second.

Managed by the local government and regulated by the Kansas Department of Agriculture, the 8 - North Sector dam has a high hazard potential but is currently assessed as satisfactory in condition. Despite its moderate risk rating, the dam's emergency action plan status and risk management measures remain unclear. With its critical role in protecting surrounding communities from flooding, continued monitoring and maintenance of this infrastructure are essential for ensuring its long-term effectiveness and safety.