The dredge Alaska arrived at the inlet and began work after it was forced to make an emergency stop to assist with dredging at the Bonner Bridge last week.
The work involves removing shoaling of the outer portion of the channel.
70,000 to 100,000 cubic yards of sand will be dredged and placed on the beach between 4th Street and 10th Street.
The work is expected to take about four days to complete and then another week to remove the equipment.
The contract for the emergency work is for $2.86 million and was awarded to Great Lakes Dredge and Dock of Oak Brook, Illinois.