Navigation Notice 207334 Dredge Potter Channel Maintenance Dredging 21 June 2024

USACE Dredge Potter
Upper Mississippi River mile 300.0 - 0.0

1.  Commencing on 21 June 2024 and continuing until further notice, the US Army Corps of Engineers Dredge Potter will perform channel maintenance dredging at various locations on the Upper Mississippi River from mile 300.0 to 0.0.

2.  The Dredge Potter will arrive at mile 217.5 UMR, near Grafton, IL, on the evening of 21 June 2024, and will work several locations up to Mile 224 UMR, Iowa Island, through 7 July 2024.  Updates to the Dredge Potter's schedule and work locations will be provided as work progresses.

3. The Dredge Potter and its attendant plant, to include tender boats, small boats, barges and pipeline, etc., work 24 hours a day, 7 days a week. When dredging, removed river bottom material is pumped through a pontoon pipeline or self floating pipeline, which may be crossing the channel, and is placed outside of the navigation channel. Mariners should be on the lookout for tender boats, barges, small survey boats, and pipeline when transiting the dredge area.

4.  The Dredge Potter may be contacted on VHF-FM radio channels 13 and 16. Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made with the Dredge Potter.

5.  For the latest updates, channel condition reports, and recent channel surveys, please visit htttps://



Andrew C. Schimpf, P.E.,
Rivers Project Manage