Groton stands as a well-defined prairie settlement at the crossroads of regional transit and agriculture in Brown County. The town's grid is anchored by N Main St and N State St, with the southern edge of the community bounded by the industrial corridor of Railroad Ave. Just north of the central residential blocks lies the Groton Cem, a key landmark for local genealogists. Beyond the township limits, the landscape transitions into a vast section-line grid defined by routes like 407th Ave and E 13th Ave. The meandering path of Mud Cr cuts through the southeastern plains, providing a stark natural contrast to the rigid geometry of the surrounding farmland and the systematic road network of this James River Valley region.
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1895 · Aberdeen
USGS Topo · 1:125,000
1896 · Columbia
USGS Topo · 1:125,000
1952 · Huffton
USGS Topo · 1:24,000
1952 · Putney
USGS Topo · 1:24,000
1953 · Groton SW
USGS Topo · 1:24,000
1953 · Milbank
USGS Topo · 1:250,000
1954 · Groton
USGS Topo · 1:24,000
1954 · James
USGS Topo · 1:24,000
1954 · Ferney
USGS Topo · 1:24,000
1954 · Aberdeen
USGS Topo · 1:250,000