1958 Map of McGrath D-2

About this map

The South Fork Kuskokwim River and its complex braided tributaries dominate this 1950s interior landscape, showing the drainage patterns of the Yukon-Koyukuk region before modern development. A persistent Winter Trail cuts across the northern reaches, crossing the Tonzona River and several minor streams, serving as a vital overland link in a region defined by its seasonal mobility. The survey details the convergence of the Big Salmon Fork Kuskokwim River and numerous secondary waterways like Deepbank Creek and Clear Fork Tonzona River. These geographic features follow the North Boundary Seward Meridian, providing a look at the surveyed lines used to organize this remote territory for the Bureau of Land Management.