2013 Map of Umiat D-3 SW

About this map

The Colville River dominates the eastern boundary of this Arctic landscape, carving a wide path through the North Slope’s coastal plain. This 2013 topographic study highlights the dramatic elevation changes along the riverbanks, most notably at Ishukpak Bluff and the prominent height of Sentinel Hill. These landmarks serve as critical navigational points in a region defined by an intricate network of wandering waterways and seasonal drainage. Smaller tributaries like the Kogosukruk River and the Kikakrorak River weave through the tundra, creating a complex hydrologic pattern of oxbow lakes and meandering channels. The map documents a portion of the National Petroleum Reserve in Alaska, illustrating a remote wilderness where the terrain is shaped entirely by the movement of water and the underlying permafrost.