2019 Map of McGrath D-2 NW

About this map

Little Tonzona River meanders across this interior Alaskan landscape, defining the hydrology of a region where water and wilderness converge. This 2019 survey captures a complex network of glacial and runoff-fed waterways, including the winding Big Salmon Fork and the tributaries of the S Fork Jones Cr. The terrain is marked by subtle elevation changes and numerous unnamed ponds, characteristic of the Yukon-Koyukuk region. In addition to major river systems, smaller drainage features like Deepbank Cr, Clear Fork, and the curiously named No Cr illustrate the intricate natural irrigation of this roadless environment. The map provides a high-resolution view of the natural topography and township boundaries, such as t34n r24w, essential for researchers studying the remote hydrology of the Alaskan interior before modern environmental shifts.