Fairfield serves as the primary hub of this northern Montana agricultural landscape, situated on the Greenfields Bench just north of the Sun River. The township is defined by a sophisticated irrigation network essential for high-plains farming, including the Greenfields Main Canal, Hamilton Canal, and the Big Coulee Canal. These man-made waterways cut through a terrain marked by distinctive coulees and rises, such as Blackfoot Coulee and Floweree Butte.
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1886 · Great Falls
USGS Topo · 1:250,000
1920 · Choteau
USGS Topo · 1:125,000
1943 · Hogan
USGS Topo · 1:125,000
1950 · Fairfield
USGS Topo · 1:62,500
1954 · Great Falls
USGS Topo · 1:250,000
1955 · Choteau
USGS Topo · 1:250,000
1957 · Choteau
USGS Topo · 1:250,000
1957 · Great Falls
USGS Topo · 1:250,000
1958 · Choteau
USGS Topo · 1:250,000
1960 · Simms
USGS Topo · 1:62,500