The closed section isn't heavily used by freight and grain barges, which mostly enter the river further south in Iowa and Illinois for the trip to major export depots in New Orleans.

关闭的河段不是货船及谷物船舶经常行驶的河段，因为这些船舶的起航点大多在衣阿华州和伊利诺斯州更南的地方，它们的终点是新奥尔良的各大出口仓库。

youdao

You could buy a complete house, and they would float it down the river to a railhead on its way to Iowa, Miller points out.

FORBES: A most unromantic river

But in River City, Iowa, Hill falls in love with the librarian and decides to stick around and face the consequences.

FORBES: Magazine Article