2019 Map of Knoblaw

About this map

Chisum Spring and the surrounding ranching landscape define this portion of the Texas Panhandle along the border of Hartley and Oldham counties. The terrain is characterized by a network of drainage systems, including Chisum Canyon and Sidle Canyon in the south, which cut through the high plains toward the Canadian River basin. Human activity in this arid environment is centered on water management, evidenced by numerous named catchment features such as West Bull Spring Tank, Red Tank, and Little Forker Tank. These labels, along with Lake Windmill, point to a long-standing reliance on seasonal water sources and groundwater to support livestock. Seasonal watercourses like Horse Cr and Minneosa Cr provide the primary topographic relief in an area primarily used for large-scale grazing.