
Twin Bridges serves as the focal point of this modern topographic survey, situated at the confluence of several significant Montana waterways. The area is defined by the meeting of the Big Hole River and the Beaverhead River, which combine to form the headwaters of the Jefferson River. This convergence creates a complex network of wetlands and irrigation infrastructure, evidenced by numerous sloughs such as California Slough and Schoolhouse Slough, alongside a dense system of man-made channels like Eastman Ditch and the Seyler-Tash Ditch.
50 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.
1893 · Dillon
USGS Topo · 1:250,000
1955 · Dillon
USGS Topo · 1:250,000
1957 · Dillon
USGS Topo · 1:250,000
1958 · Dillon
USGS Topo · 1:250,000
1960 · Twin Bridges
USGS Topo · 1:62,500
1960 · Waterloo
USGS Topo · 1:62,500
1962 · Dillon
USGS Topo · 1:250,000
1962 · Beaverhead Rock
USGS Topo · 1:24,000
1962 · Beaverhead Rock NE
USGS Topo · 1:24,000
1963 · Sheridan
USGS Topo · 1:24,000