The headwaters of the Missouri River take shape at the convergence of three legendary waterways on this 2011 survey of Gallatin County. The Jefferson River, Madison River, and Gallatin River (just off-sheet) unite here, creating a complex hydrology that has defined the growth of Three Forks for over a century. The town is depicted with a detailed street grid including W Jefferson St and W Front St, positioned as a historic junction where rail and river networks meet. Irrigation infrastructure like the Darlington Ditch and Francis Walbert Ditch cut through the landscape, illustrating the agricultural backbone of the Gallatin Valley.
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This is the sole edition of this map. No revisions or reprints were ever made.
1886 · Fort Logan
USGS Topo · 1:250,000
1888 · Three Forks
USGS Topo · 1:250,000
1894 · Three Forks
USGS Topo · 1:250,000
1895 · Three Forks
USGS Topo · 1:250,000
1947 · Bozeman
USGS Topo · 1:250,000
1948 · Bozeman
USGS Topo · 1:250,000
1948 · White Sulphur Springs
USGS Topo · 1:250,000
1949 · Radersburg
USGS Topo · 1:62,500
1949 · Manhattan
USGS Topo · 1:62,500
1949 · Toston
USGS Topo · 1:62,500