EarthWorks Geospatial Catalog

Preliminary evaluation of lake susceptibility to water-quality degradation by recreational use, Alpine Lakes Wilderness area, Washington [cartographic material] / by R.J. Gilliom ... [et al.] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the United States Forest Service and the Washington Department of Game.

Relief shown by contours and spot heights. "Base from U.S. Geological Survey Snoqualmie Pass, Skykomish River, Chelan, Wenatchee, 1:100,000, 1975." "Puget Sound Region Earth Sciences Application Project"--Envelope front cover. Includes text, 1 diagram, and 1 index map. On envelope back cover: Index map Puget Sound region.
U.S. Geological Survey
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