Skip to main content
U.S. flag

An official website of the United States government

Publications

For more than a century, USGS scientists have conducted research in California’s Bay-Delta region. Informing natural-resource management decisions on the region’s issues, this research has been published in thousands of documents, some highlighted below.

Filter Total Items: 308

An on-line diagnostic wind model applied to the San Francisco Bay region

No abstract available.
Authors
R. T. Cheng, J. Feinstein, F. Ludwig, D. M. Sinton

A comparison of selenium and mercury concentrations in transplanted and resident bivalves from North San Francisco Bay

Many of the methodologies for effective use of organisms to monitor and study contamination in estuaries are well established (Phillips, 1980; Phillips and Rainbow, 1993). Understanding the processes that determine bioaccumulation and determining concentrations of contaminants in biological tissues are best employed in conjunction with analysis of other environmental media (e.g., water, suspended
Authors
Samuel N. Luoma, Regina Linville

Factors affecting suspended-solids concentrations in South San Francisco Bay, California

Measurements of suspended-solids concentration (SSC) were made at two depths at three sites in South San Francisco Bay (South Bay) to determine the factors that affect SSC. Twenty-eight segments of reliable and continuous SSC time series data longer than 14 days were collected from late 1991 or 1992 through September 1993. Spectral analysis and singular spectrum analysis were used to relate these
Authors
D. H. Schoellhamer

Suspended-solids flux at a shallow-water site in south San Francisco Bay, California

Time series measurements of current velocity and suspended solids-concentration (SSC) made during December 1993 and March 1994 at a shallow-water site in South San Francisco Bay were used to estimate and compare suspended-solids flux during the two periods. In December, the average residual flux at the site was 2.88 g/m/s, to the northeast, whereas in March the average residual flux was four times
Authors
Jessica R. Lacy, David H. Schoellhamer, Jon R. Burau

Sierra Nevada runoff into San Francisco Bay - Why has it come earlier recently?

By the time most of the Sierra Nevada snowpack has melted each summer, freshwater outflows from the Sacramento-San Joaquin Delta to San Francisco Bay are typically small, even after the wettest winters. These small delta outflows during the warm months (in comparison with the large flows of winter and spring) are overwhelmed by salty coastal waters, and the bay becomes more and more salty as summe
Authors
M. D. Dettinger, D.R. Cayan, D.H. Peterson

USGS supports ecosystem management in the San Francisco bay and delta

In the past several years, the Department of the Interior has ,l?laced particular emphasis on "ecosystem management" - the integration of scientific knowledge of ecological relationships with resource management practices to sustain ecological, cultural, and economic systems in broad habitat areas; eg., forest, desert, and aquatic habitats. The goal of ecosystem management is to understand the hab
Authors
Frederic H. Nichols