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1967 Map of Tar Spring Ridge, 1969 Print
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1967 Map of Tar Spring Ridge

USGS Topo · Published 1969

About this map

Lopez Dam Spillway is a focal point of this late 1960s survey, shown while the reservoir area was still undergoing significant transformation. Labels for a Proposed Location and areas marked Under Construction detail the expansion of the water infrastructure along Arroyo Grande Creek, which flows into the basin near Lopez Park. The map documents a landscape defined by steep ridges and deep canyons, where rural life persisted at established sites like Ranchita Ranch and Tar Spring Ranch.

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Map Details

Date Portrayed1967
Date Published1969
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24000
Physical Dimensions22 x 26.8 inches

Editions of this 1967 Tar Spring Ridge Map

Historical Maps of San Luis Obispo County Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain