DULUTH, MN (KDAL) - A dredging program in the Duluth harbor just off I-535 is continuing around the clock. The project is designed to take material from the bottom of a navigational channel and pump it into a cove at the bottom of 21st Avenue West. Jim Sharrow from the Duluth Seaway Port Authority says by creating shallower water in the cove it will enhance the habitat for plants, fish and other wildlife in that area. The floating boom and skirt being used in the dredging helps to contain the material in the cove. The 24 hour a day operation is expected to continue until early November and then resume again next year.