1987 Map of Yakutat B-4 NW

About this map

Yakutat Foreland is dominated by a complex network of glacial outwash and tidal influences in this late-twentieth-century survey. The landscape is defined by the braided path of the Ahrnklin River as it moves toward the Gulf of Alaska, depositing sediment that forms the substantial Blacksand Spit. This coastal boundary protects a series of dynamic waterways, including Middle Slough and the lower reaches of Seal Creek. Located within the Tongass National Forest, the area shows no roads or permanent structures, reflecting a wilderness state where the primary geographic changes occur through shifting Tidal Flats and the movement of Blacksand Island. The 1980s data provides a specific record of this shoreline's configuration before subsequent decades of coastal erosion and glacial siltation continued to reshape the river mouth.