Niarada is on Sullivan Creek twenty miles west of the Big Arm of Flathead Lake. Flathead Lake is the largest natural freshwater lake west of the Mississippi. 28 miles long and 15 miles wide, Flathead Lake offers unlimited recreational opportunities and wildlife habitat. Niarada is located on the Flathead Indian Reservation home to the Bitterroot Salish, Upper Pend d'Oreille, and Kootenai tribes.