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Suisun Bay bathymetric change: 1866 to 1990

Dates

Publication Date
Start Date
1866
End Date
1990

Citation

Foxgrover, A.C., Fregoso, T.A., and Jaffe, B.E., 2024, Historical bathymetry and bathymetric change within San Francisco Bay, California: 1855 to 2005: U.S. Geological Survey data release, https://doi.org/10.5066/P13H35QB.

Summary

This data release provides a series of four bathymetric change grids generated from historical bathymetric surveys collected in Suisun Bay, CA from the 1866 to 1990. The National Ocean Service (NOS) and its predecessor, the United States Coast and Geodetic Survey, collected hydrographic surveys in 1866, 1886, 1923, 1941, and 1990. Surface modeling software was used to generate bathymetric DEMs of each of these surveys. The bathymetric DEMs were then adjusted to account for gridding interpolation bias and changes in sea level through time. The adjusted DEMs for consecutive surveys were then differenced to reveal the amount of sediment erosion and deposition and changes from human activities (e.g., dredging, sand mining) that occurred [...]

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Attached Files

Click on title to download individual files attached to this item.

SSB_chg_1866_1886_m.zip 887.23 KB application/zip
SSB_chg_1886_1923_m.zip 696.33 KB application/zip
SSB_chg_1923_1941_m.zip 604.99 KB application/zip
SSB_chg_1941_1990_m.zip 611.71 KB application/zip
SSB_chg_map_1866_1886.png
“Sample map of Suisun Bay bathymetric change from 1866 to 1886”
thumbnail 554.82 KB image/png

Purpose

Analysis of historical bathymetric surveys enables us to reconstruct the surface of the bay floor through time and quantify spatial and temporal changes in deposition, erosion, and bathymetry over decadal timescales. These data provide insight on changes to San Francisco Bay in response to natural processes as well as anthropogenic activities and can inform numerous studies and applications such as sediment management practices, restoration projects, regional adaptation plans, contaminant transport research, and sea-level rise studies. These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems (GIS) or other software to identify changes in the depth of the bay floor through time. These data are not intended to be used for navigational purposes.

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