Gilman sits at the heart of an intricate water management system in Lewis and Clark County, where the high plains meet the intricate hydraulics of the early 21st century. The landscape is defined by the heavy engineering of the Sun River Slope Canal and the Floweree Canal, which draw from the Sun River to support the local agricultural economy. This network of man-made waterways, including the Lytle Clemons Ditch, weaves around natural features like Gilman Hill and Meyer Hill, illustrating the complex relationship between the area's arid geography and its irrigation needs. To the south and east, the natural drainage of Elk Creek and Spring Creek contrasts with the straight-line precision of the gridded road system, while Basin Lake and Meyer Lake provide essential landmarks in this open ranching country. The presence of Hogan Slough and multiple coulees, such as Maloney Coulee, further emphasizes the specialized drainage patterns unique to this part of Montana.
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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 · Augusta
USGS Topo · 1:24,000