
Sun River defines the southern boundary of this high-plains landscape, where the border between Teton Co and Lewis and Clark Co follows the river's winding course. This late-twentieth-century survey reveals a sophisticated irrigation network vital to Montana's agricultural economy, dominated by the Spring Valley Canal, Floweree Canal, and Sun River Slope Canal. These man-made watercourses trace the contours above deeply incised natural drainage features like Big Coulee and Elbow Coulee.
13 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1920 · Choteau
USGS Topo · 1:125,000
1943 · Hogan
USGS Topo · 1:125,000
1955 · Choteau
USGS Topo · 1:250,000
1957 · Choteau
USGS Topo · 1:250,000
1958 · Choteau
USGS Topo · 1:250,000
1960 · Gilman
USGS Topo · 1:62,500
1960 · Freezeout Lake
USGS Topo · 1:62,500
1962 · Choteau
USGS Topo · 1:250,000
1963 · Bowmans Corners NW
USGS Topo · 1:24,000
1963 · Bowmans Corners NE
USGS Topo · 1:24,000