2023 Antioch Dunes NWR San Joaquin River Dredging Project

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2023 Antioch Dunes NWR San Joaquin River Dredging Project

In 2023 approximately 7,859 cubic yards of new sand material was pumped onto Antioch Dunes. 

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Fact Sheet
Antioch Dunes evening primrose
Historically a shifting riverine sand dune ecosystem, the Antioch Dunes National Wildlife Refuge supports the last known populations of the endangered Antioch Dunes evening primrose, the Contra Costa wallflower, and the Lange's metalmark butterfly.
A bright blue sky obstructed by fluffy white clouds reflected off of a stream shot from inside a kayak
The U.S. Fish and Wildlife Service manages an unparalleled network of public lands and waters called the National Wildlife Refuge System. With more than 570 refuges spanning the country, this system protects iconic species and provides some of the best wildlife viewing opportunities on Earth.
FWS and DOI Region(s)