Calumet Mountains dominate the northeastern reaches of this survey, marking a stark contrast to the lower expanses of the Mojave Desert that fill the central corridor. This 2018 topographic study of San Bernardino County illustrates the complex drainage patterns of a landscape shaped by intermittent water flow, where seasonal washes originate in the high ground of the Sheep Hole Mountains and descend toward the desert floor. The map records the precise Public Land Survey System divisions, including boundaries for t2n r13e, t2n r14e, t1n r13e, and t1n r14e, which define the administrative geography of this unpopulated arid region. It serves as a detailed reference for the topographical contours and alluvial fan formations characteristic of this section of the California desert.
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This is the sole edition of this map. No revisions or reprints were ever made.
1942 · Amboy
USGS Topo · 1:250,000
1943 · Amboy
USGS Topo · 1:250,000
1943 · Cadiz Lake
USGS Topo · 1:62,500
1943 · Cadiz Valley
USGS Topo · 1:62,500
1954 · Needles
USGS Topo · 1:250,000
1954 · Bristol Lake SW
USGS Topo · 1:24,000
1956 · Needles
USGS Topo · 1:250,000
1956 · Dale Lake
USGS Topo · 1:62,500
1956 · Bristol Lake
USGS Topo · 1:62,500
1956 · Cadiz Lake
USGS Topo · 1:62,500