Sea Level Rise in San Francisco Bay

Photo: David Sanger
Sea levels are rising around the globe, caused by burning of fossil fuels since the beginning of the industrial age. San Francisco Bay has one of the oldest tidal gauges in the nation at the Golden Gate, installed in the 1850s. It measured a rise in sea level of over seven inches between 1900 and 2000, consistent with readings from tide gauges around the world. But the rate of rise is increasing and scientist forecast that levels could rise and additional sixteen inches by 2050. The State of California has instructed its agencies to plan for a rise of fifty-five inches by 2100. Restoration of the marshlands of San Francisco Bay can play a major role in protecting the shoreline from flooding. Explore the links below to learn what The Bay Institute and many others are doing to prepare the region for these unprecedented changes.

Rising Seas Threaten People and Wildlife

Rising tides threaten to drown marshes and flood residential, commercial and industrial lands. Critical infrastructure like roads, highways and airports are in the flood zone. Learn why it’s happening and what is at risk.

HORIZONTAL LEVEE® Coastal Storm-Surge Barrier

Restoring San Francisco Bay’s tidal marshes is one of the best and most inexpensive ways to protect valuable shoreline development from sea level rise during the next several decades.

The Oro Loma Horizontal Levee

At a wastewater treatment plant on the San Lorenzo shoreline an unassuming group of scientists, engineers and politicians is conducting a cutting-edge experiment to address sea level rise. The results will have global implications.