
Ash Valley is defined by a complex hydraulic landscape of ditches, levees, and reservoirs at the base of Knox Mountain. This 1993 revision, conducted by the U.S. Forest Service, illustrates the ranching and resource management character of northeastern California. Evidence of local history and land use is found in features like Fleming Sheep Camp and a small Cem located near the center of the valley floor. Water remains the primary shaper of human activity here, with Ash Creek feeding into a network of managed water sources, including Holbrook Reservoir and Spooner Reservoir. The western portion of the map transitions into the Modoc National Forest, where the terrain rises toward Oxendine Spring and Diaz Spring. Several small pits and a Gravel Pit suggest localized mineral extraction or road maintenance during this period.
28 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 · Honey Lake
USGS Topo · 1:250,000
1891 · Honey Lake
USGS Topo · 1:250,000
1892 · Alturas
USGS Topo · 1:250,000
1893 · Honey Lake
USGS Topo · 1:250,000
1954 · Grasshopper Valley
USGS Topo · 1:62,500
1954 · Alturas
USGS Topo · 1:250,000
1955 · Westwood
USGS Topo · 1:250,000
1956 · Hayden Hill
USGS Topo · 1:62,500
1958 · Alturas
USGS Topo · 1:250,000