Jefferson River
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The Jefferson River is a tributary of the Missouri River, approximately 83 miles long, in the U.S. state of Montana. The Jefferson River and the Madison River form the official beginning of the Missou
Confluence of Beaverhead and Big Hole Rivers forming the Jefferson near Twin Bridges, Montana
Jefferson River near Parrot Castle, October 2007
Small marine fossils can be found in the Madison Group limestone that makes up the steep, narrow section of the Jefferson River canyon.
Lewis and Clark ascended the Jefferson River in 1805 in their search for a navigable water route to the Pacific.
Missouri Headwaters State Park is a public recreation area occupying 535 acres at the site of the official start of the Missouri River. The park offers camping, hiking trails, hunting, and water-relat
Confluence of the Madison River and Jefferson River at the starting point of the Missouri River