
Modoc National Forest dominates the high-country terrain of northeastern California in this late 1980s survey, straddling the state line where Klamath and Modoc counties meet. The landscape is defined by the massive expanse of the Clear Lake Reservoir, which is protected as part of the Clear Lake National Wildlife Refuge. This area serves as a critical basin for the Lost River, which meanders through the northern section of the quadrangle near Walter Flat.
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This is the sole edition of this map. No revisions or reprints were ever made.
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
1894 · Klamath
USGS Topo · 1:250,000
1951 · Clear Lake Reservoir
USGS Topo · 1:62,500
1951 · Tulelake
USGS Topo · 1:62,500
1954 · Alturas
USGS Topo · 1:250,000
1955 · Klamath Falls
USGS Topo · 1:250,000
1957 · Malin
USGS Topo · 1:62,500
1958 · Alturas
USGS Topo · 1:250,000