Summary of Suspended-Sediment Concentration Data, San Francisco Bay, California, Water Year 2005

Abstract

Suspended-sediment concentration data were collected by the U.S. Geological Survey in San Francisco Bay during water year 2005 (October 1, 2004-September 30, 2005). Optical sensors and water samples were used to monitor suspended-sediment concentration at two sites in Suisun Bay, three sites in San Pablo Bay, two sites in Central San Francisco Bay, and three sites in South San Francisco Bay. Sensors were positioned at two depths at most sites. Water samples were collected periodically and analyzed for concentrations of suspended sediment. The results of the analyses were used to calibrate the output of the optical sensors so that a record of suspended-sediment concentrations could be derived. This report presents the data-collection methods used and summarizes, in graphs, the suspended-sediment concentration data collected from October 2004 through September 2005. Calibration curves and plots of the processed data for each sensor also are presented.

Calculation of a suspended-sediment concentration-turbidity regression model and flood-ebb suspended-sediment concentration differentials from marshes near Stone Harbor and Thompsons Beach, New Jersey, 2018–19 and 2022–23

“…The ranks of the upper and lower intervals were then calculated and rounded to the nearest integer, and the slope associated with each rank was identified. See Buchanan and Lionberger (2007) for more detailed information about the nonparametric prediction interval and confidence interval calculations that were used in this study.…”

Calibrating optical turbidity measurements with suspended-sediment concentrations from the Herring River in Wellfleet, Massachusetts, from November 2018 to November 2019

“…The ranks of the upper and lower intervals were then calculated and rounded to the nearest integer, and the slope associated with each rank was identified. See Buchanan and Lionberger (2007) for more detailed information about the PInp and confidence interval calculations that were used in this study.…”

Tidal and Nontidal Marsh Restoration: A Trade‐Off Between Carbon Sequestration, Methane Emissions, and Soil Accretion

“…However, the sizeable differences in initial surface elevation among sites make nontidal managed wetlands in subsided islands (>3 m below mean sea level) particularly at risk of collapse. Estimated rates of soil accretion observed at nontidal managed wetlands may not be enough to reach mean sea-level before a high risk of levee failure and flooding (Buchanan & Lionberger, 2007). However, their restoration contributes to gains in surface elevation that reduce the trajectory of increasing hydraulic pressures on levees and seepage onto islands while it breaks the unsustainable subsidence cycle from drainage and peat oxidation.…”