2020 Map of Pass Creek East

About this map

Aberdeen and Wyola anchor this Montana-Wyoming border landscape, where the high plains meet the intricate drainage systems of the Big Horn County region. The map reveals a complex water management history through features like the Upper Spear Ditch and Thompson Ditch, which parallel the course of Pass Cr to support local ranching or agriculture. These man-made channels snake through the terrain alongside natural waterways such as Wyola Cr and Wolf Cr. The state line between Montana and Wyoming bisects the lower portion of the sheet, crossing Gannon Draw and marking the boundary between Big Horn County and Sheridan County. This network of creeks—including Line Rider Cr and Middle Pine Cr—illustrates the vital role of water rights and geographic borders in defining this rural frontier territory.