Here’s some cool video showing the U.S. Army Corps. of Engineers’ Dredge Potter hard at work near the confluence of the Illinois and Mississippi Rivers.
The Dredge Potter was originally built in 1932 and is a dustpan dredge. During operations, the dustpan head is submerged toward the river bottom and water jets stir up the sand gravel on the bottom of the river, which is then vacuumed up and moved through 800 feet of pipe to be discharged somewhere outside the channel.
Video by Bowzer via Youtube