the_cardfather t1_j14y11q wrote
Reply to comment by icmonkey123 in When this bridge in Fort Benton, Montana, USA was built 1888 it was required to have a swing span to allow steamboats to navigate. It was considered the furthest navigable point on Earth, more than 2,700 miles from the Gulf of Mexico. by triviafrenzy
The Missouri continues considerably further than that. Does that mean that it's not navigable, or that we've dredged it considerably since then?
digit4lmind t1_j15dxe8 wrote
It’s actually not navigable up to this point anymore, since the river has been heavily dammed in Montana and the Dakotas
CassandraVindicated t1_j16ca74 wrote
Reading the Journals of Lewis and Clark, they apparently were able to navigate the Missouri up until a large waterfall that they had to portage around. Anyone familiar with that stretch of the Missouri would probably be able to name it.
pug_subterfuge t1_j16qtn3 wrote
Great Falls is roughly the location in Montana they had to portage around. They got extra screwed as that area is mostly cottonwood trees which aren’t very useful for portaging.
CassandraVindicated t1_j16ry12 wrote
Yeah, in the book they described it as quite a challenge and apparently it took more time than they wanted to spend. Thanks for the info.
jubru t1_j160mxx wrote
I mean not much further. It terminates near three forks about a 3 hour drive south.
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