2020 Map of Pennock Creek

About this map

The Powder River carves a broad valley through this section of Custer County, serving as the central geographic feature for a network of ephemeral drainages and intermittent streams. This 2020 landscape is defined by the erosion patterns typical of the region, where landforms such as Baldy Butte and Cut Coulee rise above the surrounding flats. The map records the essential infrastructure for navigating this ranching country, notably the Mason Creek Bridge and long stretches of Powder River Rd. Numerous named tributaries like Pennock Cr, Mason Cr, and Tiger Tom Cr reach into the upland areas, illustrating how the drainage system dictates the placement of transit routes such as Trail Creek Rd. The survey provides a clear view of the land divisions across several townships, capturing the modern state of this river-cut terrain.