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1966 Map of Illabot Peaks

Name: 1966 Topographic Map of Illabot Peaks
Creator: U.S. Geological Survey
Published: 1979
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1979

About this map

The Skagit R flows through the northwest corner of this quadrangle, serving as a primary drainage for a network of alpine creeks and high-altitude lakes. Within the Mt Baker National Forest, the topography is defined by the prominent Illabot Peaks and the high saddle at Bettys Pass. The drainage patterns show a complex system of waterways, including Illabot Creek, Iron Creek, and Grade Creek, which descend from glaciated heights toward the river valley below.

A string of secluded alpine water bodies, such as Marten Lake, Falls Lake, and the remote Lake Tupso, are scattered across the high basins. Access during the mid-1960s was limited to a few specific forest routes, including the Illabot Road, West Road, and the Suiattle Road, highlighting the area's isolation. These roads follow the lower contours of ridges like Suiattle Mtn, providing a record of mid-century forest management and wilderness access in Skagit County.