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1993 Map of Detert Reservoir
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1993 Map of Detert Reservoir

USGS Topo · Published 1993

About this map

The rugged boundary between Lake, Napa, and Sonoma counties is dominated by the mercury and silver mining legacy of the Mayacmas Mountains. This 1993 revision reveals a landscape defined by historic extraction, featuring numerous workings such as the Oat Hill Mine, Silverado Mine, and Mirabel Mine. The southern portion of the map is largely occupied by Robert Louis Stevenson State Park, preserving the high elevations of the range including The Palisades and Table Rock. To the north, the terrain transitions into the ranch lands of Guenoc and the Collayomi Rancho, where the Detert Reservoir and several landing strips service the local area near Middletown. The intricate network of creeks, such as St Helena Creek and Bucksnort Creek, illustrates the complex drainage patterns feeding into the larger valleys below these volcanic peaks.

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Map Details

Date Portrayed1993
Date Published1993
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.9 x 26.6 inches

Editions of this 1993 Detert Reservoir Map

This is the sole edition of this map. No revisions or reprints were ever made.

Historical Maps of Middletown Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain