San Diego National Wildlife Refuge biologists are monitoring the movement of the 450,000 cubic yards sand dumped on Imperial Beach shores last fall, worried that southbound sand will block the river mouth as it did …
March 19, 2013
Posted March 19, 2013
San Diego National Wildlife Refuge biologists are monitoring the movement of the 450,000 cubic yards sand dumped on Imperial Beach shores last fall, worried that southbound sand will block the river mouth as it did …