1958 Map of Tyonek

About this map

The Skwentna River and the massive Susitna River dominate this mid-century look at the upper Cook Inlet region, revealing a landscape defined by glacial networks and riverine settlements. This 1:250,000 scale survey captures the area during a period of transition, showing the Alaska Railroad corridor passing through eastern settlements like Willow and Kashwitna while the western interior remains accessible primarily via waterways or the Winter Trail. High-elevation landmarks such as Mount Spurr and Mount Torbert in the Tordrillo Mountains contrast with the low-lying coastal marshes near Old Tyonek and the Susitna Flats. The inclusion of bathymetric data within Cook Inlet and along the Knik Arm provides a rare look at the underwater topography of these treacherous glacial waters, alongside coastal settlements like Tyonek and Ladd.