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1982 Map of Blackburn Canyon

Name: 1982 Topographic Map of Blackburn Canyon
Creator: U.S. Geological Survey
Published: 1988
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1988

About this map

San Bernardino National Forest dominates this landscape, where the confluence of the North Fork and South Fork San Jacinto River meets near the Cranston FS Station. The terrain is defined by prominent elevations such as Rouse Hill and Red Mountain, the latter of which is marked by a Lookout Tower and Radio Facility. The drainage patterns are clearly visible, tracing the path of Bautista Creek through the rugged Blackburn Canyon and past Hixon Flat.

Water sources are vital markers in this arid environment, including Milky Spring (Dry), Halfway Spring, and Bautista Spring. This 1980s data highlights the transition between the developed valley floor, containing Sewage Disposal Ponds, and the protected wilderness of the State Game Refuge. For those tracing the evolution of regional infrastructure, the Toll Road and various 4wd tracks provide evidence of historical access routes into the San Jacinto mountains.