Water flow, wetlands, water quality, hazards and more, from the U.S. Geological Survey.
Bay Institute of San Francisco, The
Dedicated to the protection and restoration of the ecosystems of San Francisco Bay, the Sacramento - San Joaquin delta, and the rivers, streams and watersheds tributary to the estuary.
Cosumnes River Preserve
Learn about, or get involved in ecosystem restoration on the only undammed river on the west slope of the Sierra.
South Bay Salt Pond Restoration Project
Mission is to convert 15,100 acres of commercial salt ponds at the south end of San Francisco Bay to a mix of tidal marsh, mudflat, and other wetland habitats.