
Pothole Valley defines this portion of the Modoc National Forest, where high-elevation drainage patterns and livestock management infrastructure characterize the landscape of the 1990s. The map reveals a network of water resources essential for this environment, including Pothole Spring, Quaking Aspen Spring, and the Timbered Ridge Reservoir. A notable human-made feature is the extensive Rock Wall following the contour of the valley near Boles Creek, likely a remnant of early ranching or boundary marking. This territory, punctuated by peaks like Blue Mountain and the long expanse of Bird Spring Ridge, shows very little permanent settlement outside of specialized sites such as a lonely Grave located near the center of the quadrangle. The presence of numerous Stock Ponds and the namesake Boles Meadow underscores the area's continued use for grazing and seasonal land management.
21 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
1892 · Modoc Lava-Bed
USGS Topo · 1:250,000
1892 · Alturas
USGS Topo · 1:250,000
1951 · Clear Lake Reservoir
USGS Topo · 1:62,500
1952 · Hackamore
USGS Topo · 1:62,500
1954 · Alturas
USGS Topo · 1:250,000
1958 · Alturas
USGS Topo · 1:250,000
1962 · Alturas
USGS Topo · 1:250,000
1962 · Steele Swamp
USGS Topo · 1:62,500