Sandia National Laboratories anchors the central valley floor of this 2012 survey, marking a significant landscape of scientific research south of Ulmar. This region in Alameda County is defined by its transition from the dense residential developments of Trevarno and the Springtown district into the steep, rolling hills of the Altamont Pass. The map highlights a specialized agricultural economy, particularly the concentration of viticulture including Wente Brothers Winery, Concannon Winery, and Cedar Mountain Winery. Infrastructure such as the Meadowlark Field Airport and the complex network of roads like Altamont Pass Rd and N Vasco Rd illustrate the area's role as a vital transportation and energy corridor. Small water features like Frick Lake and Patterson Reservoir dot the arid terrain, while drainage systems including Arroyo Seco and Arroyo Mocho trace the natural topography of the eastern Livermore Valley.
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This is the sole edition of this map. No revisions or reprints were ever made.
1896 · Mt. Diablo
USGS Topo · 1:62,500
1898 · Mt. Diablo
USGS Topo · 1:62,500
1906 · Pleasanton
USGS Topo · 1:62,500
1907 · Tesla
USGS Topo · 1:62,500
1911 · Byron Hot Springs
USGS Topo · 1:31,680
1914 · Bethany
USGS Topo · 1:31,680
1916 · Byron Hot Springs
USGS Topo · 1:31,680
1916 · Byron
USGS Topo · 1:62,500
1916 · Midway
USGS Topo · 1:31,680
1940 · Byron
USGS Topo · 1:62,500