Copper Mountain stands as a central peak in this canyon-carved landscape of western Stanislaus County, where ranching heritage and modern development meet. Long-established family holdings such as Mullally Ranch, Atkins Ranch, and Gerber Ranch are scattered across a complex drainage system defined by Del Puerto Cr and Salado Cr. The terrain is marked by sharp elevation changes, notably through Arkansas Canyon and Slick Rock Canyon, which feed into the larger creek systems. While much of the area remains dedicated to open land and ranching at Ballard Flat and Adobe Flat, the southeastern corner shows the modern residential footprint of Diablo Grande, reached via Diablo Grande Pkwy. These newer road networks contrast with the winding path of Del Puerto Canyon Rd, which traces the natural watercourses through the gulches.
36 named features on this map. Tap any name to fly to it.
Don’t see what you’re looking for? This feature index may not catch every label — zoom into the map to look around manually.
This is the sole edition of this map. No revisions or reprints were ever made.
1913 · Romain
USGS Topo · 1:31,680
1915 · Westley
USGS Topo · 1:31,680
1916 · Patterson
USGS Topo · 1:31,680
1916 · Romain
USGS Topo · 1:31,680
1919 · Orestimba
USGS Topo · 1:62,500
1919 · Orestimba Creek
USGS Topo · 1:31,680
1922 · Carbona
USGS Topo · 1:62,500
1938 · Mt. Boardman
USGS Topo · 1:62,500
1941 · Orestimba
USGS Topo · 1:62,500
1941 · Modesto West
USGS Topo · 1:62,500