While still in Cimarron County, the watercourse curves north into Kansas, precisely dips southward into Beaver and Harper constituency of Oklahoma, again stream north into Kansas, and recover the Sooner State, unconfined to the southeast and on condition that the boundary between performance and Woods constituency. Unlike many of Oklahoma Rivers and streams, the Cimarron is not restricting until it integrates with the Arkansas River, generate Lake Keystone.
Above this, the Cimarron stream freely for 698 miles, slumping as far south as intermediate Logan County, north of dispense Guthrie, before revolve north and ultimately consolidate the lake in Creek County.