2011 Map of Winnett South

About this map

Petrolia Lake and a complex network of waterways define this region south of Winnett as it appeared in 2011. The landscape is marked by the meandering paths of Flatwillow Creek and McDonald Creek, which likely dictated the placement of early ranch roads and property boundaries. The transition from established routes like Old Winnett Rd to rural passages like Murnion Rd and Kelly Rd illustrates the enduring layout of Petroleum County's grazing lands. Smaller tributaries, including Elk Creek, Yellow Water Creek, and Alkali Creek, trace the natural drainage patterns that have historically supported the area's agricultural life. This documentation by the U.S. Geological Survey captures the quiet intersections of water and wire in a sparsely populated section of the Montana plains.