2021 Map of Big Delta C-5 SW

About this map

The Salcha River snakes through the southern portion of this interior Alaska wilderness, creating a complex drainage system characterized by numerous wetlands and side channels like Koepke Slough. This 2021 survey reveals a landscape largely defined by its waterways, with Ninetyeight Cr cutting across the central hills and the McCoy Cr drainage feeding into the main river valley from the south. The terrain transitions from high ridges in the north down toward the river's floodplains. To the east, Twentyfive Mile Cr joins the larger river system, marking a significant tributary junction. This map illustrates the natural hydrological patterns of the Fairbanks North Star region before major development, documenting the raw topography of the tanana valley highlands.