U.S. Army Corps of Engineers, Detroit District, field team member Senior Hydraulic Engineer Matt McClerren documents St. Clair River ice jams and checks on Corps of Engineers gages (green box) on the St. Clair River in Marine City, Michigan, February 3, 2021. Using strategically placed water monitoring equipment and a field team, the U.S. Army Corps of Engineers is providing technical advice for St. Clair River U.S. and Canadian coast guard ice breaking operations.