2014 Map of Pentecost Reservoir

About this map

Pentecost Reservoir anchors this remote section of the Montana prairie along the border of Powder River and Carter counties. The landscape is defined by an intricate network of drainage systems, including Pentecost Draw, Quaking Aspen Draw, and Reynolds Draw, which cut through the high plains toward prominent elevation markers like Haystack Butte. These features, alongside Cedar Canyon and Kuster Canyon, illustrate the erosional topography typical of this region's headwaters. Human presence is sparse, indicated by early 21st-century infrastructure such as Moore Rd, Jims Rd, and Crow Creek Rd. This survey documents the intersection of seasonal waterways like Lightning Cr and Crow Cr with established ranching and grazing land boundaries, providing a clear record of the area's physical geography before any modern development or shifts in land management.