Established 1872

Commencing at a point in the middle of the main channel of the Washita River, where the ninety-eighth meridian of west longitude crosses the same, thence up the middle of the main channel of said river to the line of 98°40′ West longitude, thence on said line of 98°40′ due north to the middle of the channel of the main Canadian River, thence down the middle of said main Canadian River to where it crosses the ninety-eighth meridian, thence due south to the place of beginning.

The Wichita Reservation is located today in the northern half of Caddo County, Oklahoma.  

The Reservation also includes parts of Grady, Canadian, Blaine, Custer and Washita Counties.