Oceanside Harbor Dredging Planned Through May, 2026: What To Know

OCEANSIDE, CA — The annual US Army Corps of Engineers dredging of Oceanside Harbor is slated to begin in April, with equipment arriving on the beaches on Tuesday, March 31, and the dredging slated to begin on Monday, April 6, the city of Oceanside announced.

"The US Army Corps of Engineers annually dredges the Oceanside Harbor inlet for safe navigation of vessels," the city announcement reads. "The 2026 dredge is expected to begin mobilization of equipment on March 31 and the dredging is set to run from April 6 to May 9, barring any equipment issues."

What would slow the process?

"Bad weather and high waves can also temporarily pause operations, which may cause this timeline to shift," they said. "𝙋𝙡𝙚𝙖𝙨𝙚 𝙪𝙨𝙚 𝙘𝙖𝙪𝙩𝙞𝙤𝙣 𝙖𝙩 𝙩𝙝𝙚 𝙗𝙚𝙖𝙘𝙝 𝙙𝙪𝙧𝙞𝙣𝙜 𝙩𝙝𝙚 𝙙𝙧𝙚𝙙𝙜𝙚 𝙤𝙥𝙚𝙧𝙖𝙩𝙞𝙤𝙣."

Once the sand is dredged from the Oceanside Harbor inlet it will be pumped onto Oceanside beaches, they said.

"The amount of sand available each year to be placed on the beaches is dependent on how much excess sand fills in the harbor entrance each winter," according to the announcement. "It varies from year to year, but usually ranges between 200,000 and 300,000 cubic yards of sand.

How far south the dredged sand can be deposited is dependent on the erosion that occurred during the preceding months.

"Often, the beach on the north side of the Pier must be filled in substantially in order to support the pipe that must be laid on the beach as it expands southward.

"Safety measures planned during the dredging operation include a delineated pathway for moving heavy equipment, posted signs, flagmen, and a lead vehicle for tractors.

There will be no permitted events in the area during any portion of the dredge cycle.

Environmental safety measures will also be implemented.

"Snowy Plover monitoring will be in place, and a fence will be set up near the San Luis Rey River outlet," the city said.

During this time, the area will also be monitored for grunion.

"Water quality is also consistently monitored during the dredge operations per permit requirements from the California Coastal Commission and Water Board," they said. "If any water quality issues were to arise, dredging operations would cease until the issue is addressed and testing shows the issue is abated."

For questions on this, please contact the US Army Corps of Engineers at (213) 452-3921 or email publicaffairs.spl@usace.army.mi