Ocean Beach has a serious erosion problem. Sand, flows from the San Joaquin-Sacramento Delta and other tributaries into the San Francisco Bay. Currents carry the sediment out the Golden Gate, where it helps replenish coastal beaches to the south. But human activicty has reduced the amount of sand leaving the Bay, and sand mining is a contributing factor. In October 2012, the California State Lands Commission granted two companies 10-year leases to extract up to 2 million cubic yards of sand each year from state-owned underwater land near Angel Island and at Suisun Bay. San Francisco Baykeeper filed suit, arguing that the state’s final environmental impact review failed to use the best available science and inadequately accounted for coastal erosion.
Ocean Beach’s Sand Supply Dries Up, Leaving Plovers Squeezed