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1989 Map of Lost Lake

Name: 1989 Topographic Map of Lost Lake
Creator: U.S. Geological Survey
Published: 1989
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1989

About this map

Humpback Mountain and Mount Catherine dominate the high terrain where the King and Kittitas county lines meet. This landscape is defined by its critical role in municipal water supply, split between the Cedar River Watershed managed by the City of Seattle and the Green River Watershed under the City of Tacoma. The map documents a rugged network of alpine hydrology, from the prominent Keechelus Lake to smaller basins like Annette Lake, Mirror Lake, and the eponymous Lost Lake.

Strategic mountain crossings such as Yakima Pass and Meadow Pass indicate historical travel routes through the Cascades, supplemented by modern recreation on the Pacific Crest National Scenic Trail. Evidence of earlier industrial footprints remains visible through the Old Railroad Grade and the Fort Tilton Historical Marker, providing clues for local historians and industrial archeologists interested in the timber and transit history of the Snoqualmie and Wenatchee National Forests.