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1931 Map of Vallecito
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1931 Map of Vallecito

USGS Topo · Published 1931

About this map

The Santa Rosa Mountains and the Vallecito Mountains dominate this 1931 topographic study of the arid interior where San Diego and Riverside counties meet. This document represents a synthesis of earlier fieldwork, combining a 1901 survey of the north with a 1913 reconnaissance of the south to illustrate the stark landscape of the Salton Basin. In this era before widespread development, water sources define the human geography, marked by isolated points like Borego Springs, the Hanna Drill Hole Water, and the intermittent Clark Lake. The presence of several I.R. (Indian Reservation) tracts and the home of Fig Tree John near the shoreline of the Salton Sea provide critical data for researchers of early 20th-century desert habitation. The map also traces the Riverside San Diego Boundary Line as it cuts through the complex terrain of the San Felipe Mts.

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Map Details

Date Portrayed1931
Date Published1931
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:125,000
Physical Dimensions18.01 x 22.06 inches

Editions of this 1931 Vallecito Map

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

Historical Maps of Salton City Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain