
Clear Lake National Wildlife Refuge and the Modoc National Forest dominate this borderland where Oregon meets California. The landscape is defined by its complex hydrologic system, centered on the Clear Lake Reservoir and the Willow Valley Reservoir. The Lost River meanders through the northwest, while the southeastern corner is marked by the distinct elevation of Sagebrush Butte. Numerous water sources vital for regional ecology and early land management are recorded, including Plum Spring, Elder Spring, and Rimrock Spring. The inclusion of the Klamath Co Modoc Co boundary line provides essential geographic context for researchers tracing land records across state and county lines in this high-desert environment. In the northeast, Pothole Valley sits near Wilson Rock Creek, showing the varied terrain of this protected wilderness area.
22 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1886 · Alturas
USGS Topo · 1:250,000
1886 · Modoc Lava Bed
USGS Topo · 1:250,000
1889 · Klamath
USGS Topo · 1:250,000
1892 · Modoc Lava-Bed
USGS Topo · 1:250,000
1892 · Alturas
USGS Topo · 1:250,000
1894 · Klamath
USGS Topo · 1:250,000
1951 · Clear Lake Reservoir
USGS Topo · 1:62,500
1954 · Alturas
USGS Topo · 1:250,000
1955 · Klamath Falls
USGS Topo · 1:250,000
1958 · Alturas
USGS Topo · 1:250,000