Mokelumne Hill serves as the central hub of this survey, where the historic Mother Lode terrain of Amador and Calaveras counties meets. The landscape is defined by the deep incision of the Mokelumne River, which separates the two counties and anchors a network of industrial water systems including the Amador Canal, Upper Standard Canal, and the Calaveras Public Utility Ditch. These features point to a long history of water management for mining and local utilities that shaped the development of settlements like Electra and Big Bar.
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This is the sole edition of this map. No revisions or reprints were ever made.
1889 · Jackson
USGS Topo · 1:125,000
1892 · Jackson
USGS Topo · 1:125,000
1897 · Jackson
USGS Topo · 1:125,000
1902 · Jackson
USGS Topo · 1:125,000
1941 · Sutter Creek
USGS Topo · 1:62,500
1944 · Valley Springs
USGS Topo · 1:62,500
1944 · Sutter Creek
USGS Topo · 1:62,500
1945 · San Andreas
USGS Topo · 1:62,500
1947 · San Andreas
USGS Topo · 1:62,500
1947 · Sacramento
USGS Topo · 1:250,000