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1967 Map of Lake Mathews

Name: 1967 Topographic Map of Lake Mathews
Creator: U.S. Geological Survey
Published: 1975
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1975

About this map

Lake Mathews dominates the northern landscape of this Riverside County quadrangle, a vital reservoir held by the Mathews Dam and fed via the Colorado River Aqueduct. The map reveals a complex water management infrastructure, including the Outlet Tower and a high-elevation spillway, set against the backdrop of the El Sobrante De San Jacinto boundary.

South of the reservoir, the terrain transitions into a region of mining and historical depth. The Atchison Topeka and Santa Fe railroad corridor through the Temescal Valley connects industrial sites like the Cajalco Tin Mine and various claypits. Genealogists and local historians will find significant cultural markers, such as the Indian Pictographs Historical Marker near Arcilla and the recorded Site of the First House in Riverside County, alongside established locales like Glen Ivy Hot Springs.