Summary of Suspended-Sediment Concentration Data, San Francisco Bay, California, Water Year 2002

By Paul A. Buchanan and Neil K. Ganju

U.S. GEOLOGICAL SURVEY

Open-File Report 2004-1219--ONLINE ONLY

Sacramento, California 2004

Prepared in cooperation with

CALFED-DELTA AUTHORITY and the

U.S. ARMY CORPS OF ENGINEERS, SAN FRANCISCO BAY DISTRICT

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Abstract

Suspended-sediment concentration data were collected in San Francisco Bay during water year 2002 (October 1, 2001-September 30, 2002). Optical backscatterance sensors and water samples were used to monitor suspended sediment 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 were analyzed for concentrations of suspended sediment. The results of the analyses were used to calibrate the electrical output of the optical backscatterance sensors so that a record of suspended-sediment concentrations could be derived. This report presents the data-collection methods used and summarizes the suspended-sediment concentration data collected from October 2001 through September 2002. Calibration curves and plots of edited data for each sensor also are presented.

CONTENTS

Abstract

Introduction

Purpose and Scope

Study Area

Acknowledgments

Methods

Instrument Description and Operation

Monitoring Sites

Suisun Bay Installations

San Pablo Bay Installations

Central San Francisco Bay Installations

South San Francisco Bay Installations

Water-Sample Collection

Data Processing

Sensor Calibration and Suspended-Sediment Concentration Data

Suisun Bay

Mallard Island

Benicia Bridge

San Pablo Bay

Carquinez Bridge

Mare Island Causeway

Channel Marker 9

Central San Francisco Bay

Point San Pablo

Pier 24

South San Francisco Bay

San Mateo Bridge

Dumbarton Bridge

Channel Marker 17

Summary

References Cited

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U.S. Department of the Interior, U.S. Geological Survey Persistent URL: http://pubsdata.usgs.gov/pubs/of/2004/1219/ Page Contact Information: USGS Publishing Network Last modified: Saturday, January 12 2013, 11:27:38 PM

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