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2011 Map of Twin Sisters Mountain

Name: 2011 Topographic Map of Twin Sisters Mountain
Creator: U.S. Geological Survey
Published: 2011
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2011

About this map

Twin Sisters Mountain and the surrounding Twin Sisters Range dominate this high-elevation landscape in Whatcom County. The terrain is defined by dramatic peaks including North Twin and South Twin, which stand above a complex drainage system feeding the Middle Fork Nooksack River to the north and the South Fork Nooksack River to the south. Several alpine water bodies are scattered throughout the highlands, including the prominent Lake Wiseman, Elbow Lake, and Three Lakes.

Logistical access to this wilderness area is marked by forest service routes like 12 and 1260, which navigate toward landmarks such as Bell Pass and the Sister Divide. The map also identifies local landmarks like George Peterson Butte, providing a detailed view of the natural topography before more modern developments or naming changes. This 2011 survey serves as a precise record of the glacial and river-carved geography of the North Cascades.