2019 Map of McGrath B-2 SE

About this map

The Alaska Range defines the high-altitude landscape of this interior terrain, where the Post River carves a deep valley through the eastern portion of the quadrangle. In this environment, water features such as Smith Lake in the northwest and the Post River drainage represent the primary landmarks in an otherwise roadless wilderness. The transition from the high peaks of the Terra Cotta Mountains to the lower river corridors highlights the stark elevation changes characteristic of the region. This 2019 survey provides a precise record of the natural hydrology and topography, capturing the undisturbed drainage patterns of the Post River before it flows toward larger systems.