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1986 Map of Mumbo Basin
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1986 Map of Mumbo Basin

USGS Topo · Published 1986

About this map

Trinity Mountains peaks and the high-elevation terrain of Shasta National Forest define this 1980s landscape along the border of Trinity and Siskiyou counties. The sheet captures a rugged wilderness characterized by deep canyons and glacial basins, notably the Mumbo Basin and the distinctively named The Bedstead. Resource extraction remains a visible part of the area's history, marked by the presence of the Altoona Mine and Integral Mine near the headwaters of the West Fork Trinity River. High alpine water bodies including Picayune Lake, Gumboot Lake, and Upper Mumbo Lake are scattered across the ridges, linked by primitive routes like the Picayune Trail. The map documents the complex drainage system where Ramshorn Creek and Mumbo Creek carve through the steep topography of Sherer Ridge and Blue Divide.

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Map Details

Date Portrayed1986
Date Published1986
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.9 x 26.6 inches

Editions of this 1986 Mumbo Basin Map

Historical Maps of Siskiyou County Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain