Study area in San Francisco Bay

At left, San Francisco Bay and surroundings in a photograph acquired April 21, 2002, by astronauts aboard the International Space Station. Note brown plumes of suspended sediment in bay waters. Yellow box outlines study area in the San Pablo Bay portion; triangles are sites where instruments were deployed. Image courtesy of NASA's Earth Observatory. At right, The study area, with triangles marking sites where instruments were deployed. Labels indicate each site's water depth relative to MLLW (mean lower low water), the average of the lowest water levels for each day. Regions below MLLW are virtually always submerged (subtidal); regions above MLLW are regularly exposed to the air (intertidal). Background image courtesy of Esri's ArcGIS Online map service and Aerials Express.