Arklow harbour and the mouth of the Arklow River is set to be dredged for the first time in 20 years.
Harbour officials have applied for a permit from the Department of Communications, Marine and Natural Resources to carry out the work and dump the sediment in a specified zone off the Arklow coast.
Harbourmaster James Heaney said sand and sediment had built up and was affecting the usability of the harbour at low tides.
He said a removal of the sediment might also help to alleviate some of the flooding risk in the town.
If permission is granted it is estimated the work will take approxamitely a month to complete, depending on weather conditions.