1955 Map of McGrath C-5

About this map

Big River dominates the eastern landscape of this interior Alaska region, winding through a complex network of wetlands and low-relief terrain. Surveyed in the mid-1950s using photogrammetric methods from aerial photographs, the map reveals a wilderness largely devoid of human infrastructure, defined instead by its hydrological patterns. The Katlitna River and Blackwater Creek snake through the central and western portions of the quadrangle, illustrating the intricate drainage systems common to this part of the Seward Meridian. In the southwest, the Little Selatna River marks the transition into higher elevations where more pronounced topographic contours emerge. This survey, which was not field checked at the time of its initial release, provides a foundational look at the unsurveyed and unmarked locations predetermined by the Bureau of Land Management for the McGrath district.