2019 Map of McGrath D-5 SE

About this map

Blackwater Cr meanders through this portion of the Yukon-Koyukuk Census Area, defining a landscape of complex water networks and low-lying terrain typical of the Alaska interior. This 2019 survey by the U.S. Geological Survey details a region dominated by intricate hydrology, where countless small lakes and ponds are scattered across the township boundaries of T31n R31w, T31n R32w, T32n R31w, and T32n R32w. The map provides a clear look at the natural drainage patterns and topographical contours of this unsettled wilderness area, capturing the state of the terrain as it appeared in the early twenty-first century. For researchers and geographers, the sheet offers a precise record of the shifting course of inland waterways in an environment shaped by seasonal freeze and thaw.