sediment

To better understand suspended-sediment transport in a tidal slough adjacent to a large wetland restoration project, we deployed continuously-measuring temperature, salinity, depth, turbidity, and velocity sensors since 2010, and added a dissolved-oxygen sensor in 2012, at a near-bottom location

Recent studies of sea level rise in San Francisco Bay have indicated that the majority of tidal marshes surrounding the Bay are likely to lose marsh plant communities by 2100 because natural sediment accretion rates will not keep pace with sea level rise.

In 2010 the U.S. Geological Survey (USGS), Coastal and Marine Geology Program completed three cruises to map the bathymetry of the main channel and shallow intertidal mudflats in the southernmost part of south San Francisco Bay.

As a result of regional groundwater overdrafts prior to the 1970s, parts of the South Bay Salt Pond Restoration Project project area have subsided below sea-level and will require between 29 and 45 million m3 of sediment to raise the surface of the subsided areas to elevations appropriate for tid

The South Bay Salt Pond Restoration Project plans to convert 50-90% of the former salt evaporation ponds of South San Francisco Bay into tidal marsh habitat. This large-scale habitat restoration may change the distribution, bioavailability, and bioaccumulation of methylmercury.

Open-File Report 2009-1180. Sampling trips were coordinated in the second half of 2008 to examine the interstitial water in the sediment and the overlying bottom waters of three shallow (average depth <1 meter) ponds adjacent to the southern reach of San Francisco Bay.

A yearly snapshot of Project milestones and assessment of progress toward meeting restoration, public access and flood management goals

This project will examine the bird population and benthic invertebrate densities on the Alviso Shoals immediately adjacent to A6 which separates Alviso and Guadalupe Sloughs.

A yearly snapshot of Project milestones and assessment of progress toward meeting restoration, public access and flood management goals

We have received the taxonomic data for most of 2006 and have done a preliminary analysis of the data to examine the temporal and spatial differences in the benthic community structure and to identify the species responsible for the variability.

The project was initiated in April 2010, and to date has included four sampling events of surface water (April, May, June/July, and August 2010) and five sampling events of biota (April, May, June/July, August, and September 2010) and three sampling events for surface sediment (May, June/July, an