1970 Map of Purdy Reservoir

About this map

TA Hills dominate this portion of Johnson County, where the landscape is defined by the convergence of the forks of Crazy Woman Creek. The 1970 field check documents a rural landscape where water management and ranching infrastructure shape the terrain, notably via the Purdy Reservoir and the Devoe Ditch that cuts across the central drainage. A network of ranch roads, including the And Long Road, connects isolated features like the northern Landing Strip and various petroleum sites including a Gas Well and Drill Hole. The naming of local drainages like Billy Creek, Poison Creek, and Seventysix Creek reflects the early livestock and settlement history of this high plains region. This survey provides a precise look at the area's hydrology before modern development, showing the intricate Gaging Sta and pipeline systems used to manage the flow of the North Fork and its tributaries.