The Bristol Mountains dominate this arid expanse of the Mojave Desert in San Bernardino County. This 2015 survey reveals a terrain defined by complex contour lines and the seasonal drainage patterns of the Bristol Mountains Wash, which cuts across the central portion of the quadrangle. The map highlights the intersection of four township and range blocks, including t9n r8e and t8n r9e, illustrating the rigid grid system used to manage these undeveloped public lands. This specific survey is an essential reference for understanding the modern topographic state of the region's wilderness, documenting the subtle elevations and drainage channels that define the high desert environment before they are altered by natural erosion.
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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
1953 · San Bernardino
USGS Topo · 1:250,000
1954 · Needles
USGS Topo · 1:250,000
1955 · Ludlow
USGS Topo · 1:24,000
1955 · Ash Hill
USGS Topo · 1:24,000
1955 · Broadwell Lake
USGS Topo · 1:62,500
1955 · Ludlow
USGS Topo · 1:62,500
1956 · San Bernardino
USGS Topo · 1:250,000
1956 · Needles
USGS Topo · 1:250,000