Near Grant in Beaverhead County, Montana — The American West (Mountains)
“Most Distant Fountain” of the Mighty Missouri
In 1921, historians named this spring "Most Distant Fountain," identifying it as the source of water Meriwether Lewis referred to in his journal. Lewis described water "issuing from the base of a low hill" about 1/2 mile below Lemhi Pass.
Was Lewis writing about this spring? We may never really know.
Water from rain and snowmelt seeps into the ground until it meets a solid layer of rock or clay. It pools above these impermeable layers, forming an aquifer. Influenced by gravity, water in an aquifer flows back out to the surface, if it can find a path. It often follows fault lines or factories underground. When water reaches the surface, it appears as a spring.
Erected by Beaverhead-Deerlodge & Salmon-Chaillis National Forest.
Marker series. This marker is included in the Lewis & Clark Expedition marker series.
Location. 44° 58.25′ N, 113° 26.622′ Touch for map. Marker is in this post office area: Dillon MT 59725, United States of America.
Other nearby markers. At least 8 other markers are within walking distance of this marker. The Beginning of the "Endless Missouri" (here, next to this marker); Sacajawea Memorial Area (within shouting distance of this marker in Idaho); Sacajawea (Memorial Area) (within shouting distance of this marker in Idaho); Crossing the Great Divide (approx. 0.3 miles away in Idaho); From Route ... To Road (approx. 0.3 miles away in Idaho); Lemhi Pass (approx. 0.6 miles away in Idaho); Agency Creek (approx. 0.6 miles away in Idaho); A Communication Across the Continent by Water (approx. ¾ mile away in Idaho).
More about this marker. This marker is at the Sacajawea Memorial Area on the Lewis and Clark National Back Country Byway and Adventure Road. The Byway is a 36 mile loop from Tendoy, Idaho to Lemhi Pass and back to Tendoy over gravel roads with a 4000 foot gain and loss in elevation. There are 10 designated stops with pullouts on the Byway and over two dozen information panels and markers on route. Estimated travel time is about 3 hours.
Categories. • Waterways & Vessels •
Credits. This page was last revised on December 4, 2017. This page originally submitted on November 2, 2017, by Barry Swackhamer of San Jose, California. This page has been viewed 73 times since then and 8 times this year. Photos: 1, 2, 3. submitted on November 2, 2017, by Barry Swackhamer of San Jose, California.