2019 Map of McGrath A-3 SE

About this map

The Alaska Range defines the high-altitude terrain of this interior region, where glacial drainages carve through a remote landscape of steep ridges and wide river valleys. The Windy Fork Middle Fork Kuskokwim River snakes through the northeast, characterized by the wide, braided gravel beds typical of sediment-heavy Alaskan waterways. To the west, the North Fork Big River marks another significant drainage system, both part of a vast watershed that remains largely unsettled. This 2019 survey documents the political geography of the area, specifically the boundary line between the Yukon-Koyukuk Census Area and the Bethel Census Area. The absence of roads or permanent structures underscores the wilderness character of the region, emphasizing the importance of natural landmarks for navigation in this stretch of the Alaska interior.