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1989 Map of Index

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

USGS Topo · Published 1989

About this map

The town of Index sits at the confluence of the north and south forks of the Skykomish River, serving as a focal point for the mountain landscape of the Snoqualmie National Forest in the late 1980s. The geography is defined by significant vertical relief, where peaks like Mt Index and Mt Persis tower over deep river valleys. The presence of an Old Railroad Grade and scattered sites labeled mine, quarry, and prospect reflect the region's historical reliance on extraction and transport.

Water is the dominant feature of this sheet, from the prominent Bridal Veil Falls and Sunset Falls to high-altitude basins like Lake Isabel and Lake Serene. The settlement of Lewis and a Trailer Park near the river illustrate the small-scale residential footprint amidst the timber and mining terrain. Significant engineering is noted by a gaging station and Fish Ladder, indicating the active management of the South Fork Skykomish River and its tributaries.