Map shows Brewerton Angle, Brewerton Channel Eastern Extension, Tolchester Channel and Craighill Angle. All are four channels associated with Baltimore Harbor that crews under contract with the U.S. Army Corps of Engineers will be dredging as part of maintenance dredging work that is expected to begin late spring 2023. In all, approximately 1.5 million cubic yards of material from the four channels will be dredged to provide continued safe navigation for vessels going in and out of the Port of Baltimore.