2015 Map of Illco

About this map

Thirty Three Mile Rd crosses the southwestern corner of this high-plains landscape, providing one of the few established routes through a region defined by its complex drainage network. The terrain is shaped by several seasonal watercourses, most notably Casper Cr and its northern branch, N Fork Casper Cr, which meander through the southern townships. To the north, the geography is dictated by the extensive reach of Twentymile Draw and its local tributary, North Fork Twentymile Draw. These ephemeral draws and the nearby Smith Draw illustrate the subtle but critical importance of water management and topography in the arid Wyoming interior. The map clearly delineates the cadastral grid across multiple townships, including T36N R80W and T35N R80W, reflecting the organized survey system used to divide these open lands.