Roll and Tyson anchor the agricultural and transport corridor of the southern Mohawk Valley in this corner of the Arizona desert. The landscape is defined by the sharp transition between the arid peaks of the Castle Dome Mountains to the north and the irrigated lowlands shaped by the Gila River. The presence of Canal Rd and E Mohawk Canal Rd illustrates the critical infrastructure required for settlement in this environment, while a strictly rectangular grid of rural roads, such as S Avenue 40 E and E Co 4th St S, suggests a highly organized land-use pattern focused on irrigation-based farming in the lower valley.
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1926 · Wellton
USGS Topo · 1:62,500
1926 · Mohawk
USGS Topo · 1:62,500
1928 · Mohawk
USGS Topo · 1:62,500
1928 · Norton
USGS Topo · 1:62,500
1929 · Wellton
USGS Topo · 1:62,500
1929 · Norton
USGS Topo · 1:62,500
1942 · Yuma
USGS Topo · 1:250,000
1953 · Ajo
USGS Topo · 1:250,000
1954 · El Centro
USGS Topo · 1:250,000
1955 · El Centro
USGS Topo · 1:250,000