Dredging on the Upper Ohio River

Last June, the US Army Corps of Engineers dredged the shipping canal at the foot by the Robert C Byrd Locks to maintain clearance for a 9' draft. I've never seen dredging done down by Evansville, IN. I wonder if it is done only on the upper Ohio where the river is smaller. Or if I just haven't visited the locks  in the Evansville area often enough to catch it.

Screenshot from a video that Christopher Flees posted
[Note the white plume of water in the left background. That is the outlet of the pipe that carries the sediment to the opposite side of the river away from the shipping channel.]

Screenshot from a video that Christopher Flees posted

At least two dredges were working the area.

Ohio & Kanawha River Photography added

The "business end" of the dredge. Judging from the size of the shaft, that is one of the bigger hydraulic motors that I have seen.

Ohio & Kanawha River Photography added

It appears they use a small barge with a tender to hold the head during transport.

Ohio & Kanawha River Photography added

I presume the boat in the background lays and picks up the pipes that carry the sediment to the other side of the river away from the shipping channel.

Ohio & Kanawha River Photography added

The USACE has subcontracted this dreging because one of Jeff's photos shows the name Bill Holman, but that is not on a list of USACE vessels. On the right is the logo on the dredge, but I don't know what company that is.

Ohio & Kanawha River Photography posted
[That company has a big towboat. Jeff also caught several photos with two smaller towboats: Buddy and Lenard.]

When they are done, they tie all the equipment together into a tow and head downstream to the next lock.

Robert Lance posted
Just departed south bound with the dredge. Going to work our way down river.
[This is probably taken from the the starboard side of the pilothouse of Robert F.]