The Detroit Engineer District will begin dredging 29,500 cubic yards of shoaling near the entrance to St. Joseph Harbor this week and conclude in late August.
The Corps maintains about 1.5 miles of federal navigation channel to a depth of up to 21 feet in the harbor entrance and river channel, as well as 18 feet in the turning basin. About 40,000 cubic yards of shoaling have been removed annually from the mouth of the St. Joseph River, which allows access for the U.S. Coast Guard and larger...
https://www.marinelog.com/inland-coastal/inland/corps-begins-dredging-st-joseph-harbor/