Dredging & Nourishment Project #1 A joint dredging and beach nourishment project by the U.S. Army Corps of Engineers and the City of South Padre Island, worth close to $4.5 million.Dredging & Nourishment Project #2 The "Alaska", dredging the Brownsville channel entrance. The dredged material (sand) is pumped from the boat through the large pipes towards the beach.