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1989 Map of Grassy Lake Reservoir
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1989 Map of Grassy Lake Reservoir

USGS Topo · Published 1989

About this map

Yellowstone National Park and the Targhee National Forest converge on this 1989 survey, where the high elevation of the Pitchstone Plateau drops away into a complex drainage of rivers and waterfalls. The southern reaches are defined by the Grassy Lake Reservoir and the John D Rockefeller Jr Memorial Parkway, reflecting the late-century management of these protected lands. Evidence of back-country access is visible through the Marysville Proposition Road and several pack trails that follow the rugged water courses.

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Map Details

Date Portrayed1989
Date Published1989
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.6 x 26.8 inches

Editions of this 1989 Grassy Lake Reservoir Map

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain