The Wenatchapam Fishery is an important cultural site for the Wenatchi people. The land is currently incorporated into Wenatchee National Forest at the confluence of the Wenatchee River and Icicle Creek near Leavenworth. The fishery was named as a reservation site in the Yakama treaty from the Walla Walla Council (1855), and the boundaries were surveyed and designated by Army personnel in subsequent years. Following the establishment and reallocation of lands of the Colville Indian Reservation, Wenatchi Chief John Harmelt was supported by Chief Joseph of the Nez Perce people in lobbying for federal protection of Wenatchi rights to the fishery. More white settlers moved to the area, infringing on the Wenatchi's claim to the land, and the Great Northern Railway was approved to build a route through the reserved land.