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Obiwan_Salami t1_j13d53k wrote

Reply to comment by Kdlbrg43 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

it did. the chicago river used to flow into lake michigan. over time, sewage built up in the lake and chicagos' drinking water was poisoned with bad disease outbreaks happening. so engineers reversed the flow around 1900ish in order to move sewage away from city and clean up the lake.

here

i been down the chicago river south branch almost to midway airport in a 40 ft. sailboat as it was being motored into winter storage at a marina along the river. thats almost to the joining at des plaines river and i saw barge traffic the entire way. entirely possible to get to the mississippi river from there.

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rechlin t1_j144amm wrote

But that point was closer to the ocean than Montana. The point here is this was the farthest point away from the end of a river that the river was still navigable.

Of course, this was in the 1800s. That part of the Missouri has not been navigable since the 1950s when the USACE built a set of flood-control dams on the Missouri.

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peteroh9 t1_j141yy7 wrote

Do you not realize that they reversed it by connecting the rivers? How would the Chicago River have flowed into Lake Michigan and connected to a river that flows to the ocean?

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ClapAlongChorus t1_j13sxwr wrote

correct, entirely possible because the ship and sanitary canal connect the two seperate watersheds in 1900. Before that, there was not a navigable connection between the chicago and the des plaines.

edit: actually the calumet canal connects the south branch to the des plaines river, I think, but I know less about it, other

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