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historical topo map of Riverside County, CA in 1986

1986 Map of Porcupine Wash

USGS Topo · Published 1987

This historical map portrays the area of Porcupine Wash in 1986, primarily covering Riverside County. Featuring a scale of 1:24000, this map provides a highly detailed snapshot of the terrain, roads, buildings, counties, and historical landmarks in the Porcupine Wash region at the time. Published in 1987, it is the sole known edition of this map.

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Map Details

Date Portrayed1986
Date Published1987
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24000
Physical Dimensions21.5 x 26.8 inches

Editions of this 1986 Porcupine Wash Map

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

Historical Maps of Riverside County Through Time

178 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain