Samantha C. McGill Angela C. Tan 20240806 Comma-separated values data release DOI:10.5066/P1XZFGCX Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey https://doi.org/10.5066/P1XZFGCX Samantha C. McGill Jessica R. Lacy Joanne C.T. Ferreira Daniel J. Nowacki Andrew W. Stevens Angela C. Tan 2024 data release DOI:10.5066/P1XZFGCX Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey Suggested Citation: McGill, S.C., Lacy, J.R., Ferreira, J.C.T., Nowacki, D.J., Stevens, A.W., and Tan, A.C., 2024, Hydrodynamic and sediment transport data from two marshes and adjacent shallows in Northern San Francisco Bay, California 2022-2023: U.S. Geological Survey data release, https://doi.org/10.5066/P1XZFGCX. https://doi.org/10.5066/P1XZFGCX Water samples were collected in San Pablo Bay, Corte Madera Bay, and a tidal creek in Corte Madera Marsh between April 2022 and June 2023 to measure suspended-sediment concentrations and percent carbon of suspended sediment. The water samples were collected near the USGS instrument platforms (see time-series data page) with a peristaltic pump, via a Niskin sampler, or directly with a sample bottle. These data were collected to calibrate turbidity data from optical backscatter sensors to suspended-sediment concentration and to quantify the carbon content suspended sediment in Corte Madera Marsh tidal creek. These data were collected as part of a study with the goal to produce information useful for prioritizing marsh restoration sites, assessing restoration actions, and understanding mechanisms of sediment delivery to marshes. These data are intended for researchers, students, policy makers, and the general public. Information about the data collection field activities can be found at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2022-619-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2023-603-FA Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. 20220412 20230602 ground condition Complete None planned -122.50600 -122.44405 38.11239 37.92245 USGS Metadata Identifier USGS:99838cb5-0512-4173-9365-d898991d79bf ISO 19115 Topic Category oceans Data Categories for Marine Planning Water-Quality Parameters USGS Thesaurus suspended material (water) field sampling water sampling marine water quality suspended material (water) Marine Realms Information Bank (MRIB) keywords water sampling None USGS U.S. Geological Survey PCMSC Pacific Coastal and Marine Science Center CMHRP Coastal and Marine Hazards and Resources Program Geographic Names Information System San Francisco Bay Sonoma County Marin County State of California San Pablo Bay none San Pablo Bay National Wildlife Refuge Corte Madera Bay Corte Madera Marsh No access constraints USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey (USGS) as the originator of the dataset and in products derived from these data. U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

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Santa Cruz CA 95060 831-460-4747 pcmsc_data@usgs.gov Edythe E. Engleman Larry L. Jackson Daniel R. Norton 1985 Engleman, E.E., Jackson, L.L., and Norton, D.R., 1985, Determination of carbonate carbon in geological materials by coulometric titration: Chemical Geology, v. 53, p. 125-128. https://doi.org/10.1016/0009-2541(85)90025-7 Data values are within the expected value range and have been used to calibrate coincident turbidity measurements in the file: NBM_Turbidity_to_SSC_calibration_constants.csv. This file can be found in the support files for the time series data section of this data release. Data values are within the expected values for suspended sediment in bay and tidal creek environments. Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Specific field notes were retained in the file to support further use of the data. Horizontal accuracy derived from GPS instrumentation is better than 5 meters (m). No formal positional accuracy tests were conducted. Pumped samples were collected with the intake valve at a fixed height on the sampling frame either resting on the seabed or suspended from the vessel. Samples collected via Niskin and/or grab methods have poorer positional accuracy as the Niskin sampler and bottles used for the grab method have larger diameters, ranging from 10.2 centimeters (cm) to 5.2 cm for the Niskin sampler and grab bottles, respectively. Water samples were collected periodically between April 2022 and June 2023 using a peristaltic pump, Niskin bottle, or sample bottle. Sampling positions were recorded using a hand-held global navigation satellite system (GNSS) receiver. Samples were placed in cold storage until processed. 20230602 The suspended sediment concentrations of the samples were determined in the USGS Pacific Coastal and Marine Science Center sediment lab. Suspended sediment concentrations were determined by a filtering a known, subsampled volume of sample through a pre-weighed filter, which is then dried and reweighed to determine the mass of suspended sediment on the filter. Suspended sediment concentrations were calculated by subtracting the weight of the filter from the weight of the reweight (post filtering) filter. The resulting weight (in milligrams) is divided by the volume of sample filtered (in liters) to get the concentration of suspended sediments. 20230615 The suspended sediment carbon analysis was performed by the PCMSC sediment and carbon labs employing a coulometric titration technique described in Engleman and others (1985) and UIC operating manuals for the UIC CM5200 autosampler furnace, the UIC CM5230 acidification module, and the UIC CM5017 coulometer. Total carbon (TC), total inorganic carbon (TIC), total organic carbon (TOC) and percent calcium carbonate (CaCO3) are reported as percent dry weight. Approximately 1 liter of the water-sediment samples were centrifuged to remove the water and concentrate the sediment. The sediment was dried and pulverized and ready to be processed for percent carbon analysis. For TC analysis, the dried samples were weighed and wrapped in an aluminum capsule then combusted at 950 degrees Celsius in an UIC CM5200 autosampler furnace attached to an UIC CM5017 coulometer. The carbon dioxide (CO2) produced by combusting the sample was then converted to TC by the UIC CM5017 coulometer. For TIC, the dried samples were weighed and loaded into an UIC CM5230 acidification module attached to an UIC CM5017 coulometer. The samples were then digested in a perchloric acid solution, and the CO2 generated was measured and converted to TIC. Two analyses per sample were run and the results were averaged. TOC was calculated by subtracting TIC from TC. The TIC value was then multiplied by 8.333 (the molar stochiometric ratio of CaCO3 to C) to convert TIC to percent CaCO3. 20230126 Data were collected in San Francisco Bay, California Point Point 304 1.0E-5 1.0E-5 Decimal degrees World Geodetic System 1984 (WGS84) WGS84 6378137.0 298.257223563 NBM22_SSC_percentcarbon_water_sample_data.csv Table containing attribute information associated with the dataset Producer defined FAN ID U.S. Geological Survey field activity number (FAN). Producer defined 2022-619-FA Samples collected during USGS field activity 2022-619-FA. Additional information about this field activity can be found at https://cmgds.marine.usgs.gov/fan_info.php?fan=2022-619-FA. Producer defined 2023-603-FA Samples collected during USGS field activity 2023-603-FA. Additional information about this field activity can be found at https://cmgds.marine.usgs.gov/fan_info.php?fan=2023-603-FA. Producer defined Sample ID Sample identifier in XYY format where X identifies the data series and YY indicates the number in the series. Identical Lab IDs indicates duplicate samples processed by the sediment lab. A forward slash symbol between two sample IDs indicates samples were combined for processing. Producer defined Unique identifier for samples; assigned in the sediment lab. Date Collected Date in month/day/year format of sample collection. Producer defined 04/12/2022 06/02/2023 Date in month/day/year format Time (UTC) Time of sample collection, in hours:minutes:seconds format, Coordinated Universal Time (UTC) Producer defined 00:00:00 23:59:59 hours:minutes:seconds format, Coordinated Universal Time (UTC) Water column location The depth relative to the air-water interface or elevation above the bed from which the sample was collected. Producer defined Values indicating sampling locations within the water column. Values followed by "mbs" were collected in meters below the surface of the water. Values followed by “mab” were collected in meters above the bed. “Surface” indicates a position in the water column close to the air-water interface where specific depth was not recorded. Latitude Latitude of sample location in decimal degrees, north. Producer defined 37.92245 38.11239 Decimal degrees Longitude Longitude of sample location in decimal degrees, east. Producer defined -122.50600 -122.44405 Decimal degrees Method Method of sample collection Producer defined pumped Samples were collected using a peristaltic pump Producer defined Niskin Samples were collected using a Niskin sampler Producer defined grab Samples were collected using a sample bottle Producer defined Total Depth (m) Water depth at time of sampling. "-999" indicates depth was not recorded. Producer defined 0.80 3.20 meters Sample Notes Relevant information regarding the sample during its collection or processing. "NA" indicates no sample notes were taken. Producer defined Unique note of relevant information regarding sample Aliquot Volume mL The volume of sample used for the analysis. “-999” indicates that no value was measured. producer defined 35.0 244.0 milliliters Wt. Sediment mg The weight of the sediment. “-999” indicates that no value was measured. producer defined 1.62 57.30 milligrams Suspended Sediment Concentration mg/L The suspended sediment concentration from the sample. “-999” indicates that no value was calculated. producer defined 8.55 778.84 milligram per liter Percent_Total_Carbon Total weight percentage of total carbon for sample. “-999” indicates that no value was measured. producer defined 1.882 2.602 percentage Percent_Total_Organic_Carbon Total weight percentage of organic carbon for sample. “-999” indicates that no value was measured. producer defined 1.848 2.425 percentage Percent_Total_Inorganic_Carbon Total weight percentage of inorganic carbon for sample. “-999” indicates that no value was measured. producer defined 0.011 0.177 percentage Percent_Calcium_Carbonate Total weight percentage of calcium carbonate (CaCO3) for sample. “-999” indicates that no value was measured. producer defined 0.089 1.477 percentage U.S. Geological Survey - CMGDS mailing and physical

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Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov These data are available in csv format (NBM22_SSC_percentcarbon_water_sample_data.csv) accompanied by CSDGM FGDC-compliant metadata. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. comma-delimited text Microsoft Excel 2002 (12527.20988) 64-bit file contains the csv table No compression applied 0.0335 https://doi.org/10.5066/P1XZFGCX Data can be downloaded using the Network_Resource_Name link and scrolling down to the Environmental Data section. None. The data are available in comma-separated values (CSV) spreadsheet format. Text editing software can be used to open the file, as well as spreadsheet programs, such as Microsoft Excel. 20240806 PCMSC Science Data Coordinator U.S. Geological Survey, Pacific Coastal and Marine Science Center mailing and physical

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Santa Cruz CA 95060 United States 831-427-4747 pcmsc_data@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998