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USGS Coastal and Marine Geology Program

Field Activity Details for field activity B105SF

AKA: none

Other ID: B-1-05-SF

Status: Completed

Organization(s): USGS, Pacific Coastal and Marine Science Center, California State Coastal Conservancy

Funding Program(s):

Principal Investigator(s): Bruce Jaffe

Affiliate Investigator(s):

Information Specialist(s): Amy Foxgrover

Data Type(s): Sonar: Single Beam

Scientific Purpose/Goals: collecting bathymetry for South San Francisco Bay Salt Pond Restoration Project (funding provided by CA Coastal Conservancy)


Start Port/Location: San Leandro and Redwood City

End Port/Location: San Leandro and Redwood City

Start Date: 2005-01-05

End Date: 2005-04-05

Equipment Used: 200khz

Information to be Derived:

Summary of Activity and Data Gathered: The survey covers approximately 250 square kilometers (97 square miles) of the bay and extends south of Coyote Point on the west shore, to the San Leandro marina on the east, including Coyote Creek and Ravenswood, Alviso, Artesian and Mud sloughs. A single-beam, 200 kHz echosounder collected depths at a nominal spacing of 0.15 m along tracklines with 100 m spacing between lines, resulting in a total of approximately 20 million soundings (or 2.7 million when thinned to 1 m spacing).


Affiliate Staff:

Notes: Class 1 hydrographic survey was collected by Sea Surveyor, Inc. of Benicia, California Sea Surveyor Inc. utilized three different vessels for surveying different regions of the bay; (1) a 29 ft aluminum vessel for north of the Dumbarton Bridge (2) a 25 ft vessel with a fiberglass hull for the shallow-water area between the Dumbarton Bridge and Coyote Creek (3) a 14 ft aluminum skiff for the shallow creeks and sloughs. Equipment used: INNERSPACE Model 455 survey-grade depthfinder with 3-degree transducer, TSS DMS-05 motion sensor, OMISTAR GPS receiver.



North: 38.25 South: 37.25 West: -123.25 East: -121.75


photo of Boat


Foxgrover, A.C., Jaffe, B.E., Hovis, G.T., Martin, C.A., Hubbard, J.R., Samant, M.R., and Sullivan, S.M., 2007, 2005 Hydrographic survey of south San Francisco Bay, California: U.S. Geological Survey Open-File Report 2007-1169, 113 p.,

Fregoso, T.A., Jaffe, B.E., and Foxgrover, A.C., 2020, High-resolution (1 m) digital elevation model (DEM) of San Francisco Bay, California, created using bathymetry data collected between 1999 and 2020 (ver. 2.0, July 2021): U.S. Geological Survey data release,


Data Acquired

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