Samantha C. McGill Joanne C.T. Ferreira Angela C. Tan 20230412 Comma-separated values data release doi:10.5066/P972R6AW Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey https://doi.org/10.5066/P972R6AW Joanne C.T. Ferreira Jessica R. Lacy Samantha C. McGill Lukas T. WinklerPrins Daniel J. Nowacki Andrew W. Stevens Angela C. Tan 2023 data release doi:10.5066/P972R6AW Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey https://doi.org/10.5066/P972R6AW Water samples were collected in South San Francisco Bay and Whale's Tail South marsh tidal creeks from November 2021 through February 2022. The water samples were collected near pre-established USGS instrument moorings with a peristaltic pump, via a Niskin bottle, or directly with a sample bottle to analyze for suspended sediment concentration. These data were collected to calibrate turbidity data from optical backscatter sensors to suspended-sediment concentration. They were collected as part of a study to quantify sediment fluxes and changes in marsh morphology at Whale's Tail marsh in southern San Francisco Bay. 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=2021-660-FA Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. 20211122 20220201 ground condition Complete None planned -122.17121 -122.14124 37.58876 37.58217 USGS Metadata Identifier USGS:9602afa5-7983-4cf5-9543-6f09504fee81 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 State of California none Whale's Tail marsh Whale’s Tail South marsh Cargill marsh Eden Landing Ecological Reserve None 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

2885 Mission Street

Santa Cruz CA 95060 831-460-4747 pcmsc_data@usgs.gov Data values are within the expected values, and have been used calibrate coincident turbidity measurements in file Regression_constants_for_converting_turbidity_to_SSC(mg_per_L).csv. Data values are within the expected values for suspended sediment in bay and tidal 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 less than 5 m. Where no gps was available, location was assigned relative to nearby instrument platforms. No formal positional accuracy tests were conducted. Pumped samples were collected on a frame either suspended at the surface or placed upon the bottom. Niskin or grab samples were not tethered to the boat and are resported as relative positions within the water column rather than a quantified position. Water samples were collected periodically between November 2021 and February 2022 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. 20220201 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 volume of sample through a pre-weighed filter, which is then dried and reweighed to determine the mass of suspended sediment on the filter. 20211024 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. 20211024 Data were collected in South San Francisco Bay, California Point Point 185 1.0E-5 1.0E-5 Decimal degrees World Geodetic System 1984 (WGS84) WGS84 6378137.0 298.257223563 WTW21_SSC_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 2021-660-FA Samples collected during USGS field activity 2021-660-FA. Additional information about this field activity can be found at https://cmgds.marine.usgs.gov/fan_info.php?fan=2021-660-FA Producer defined Lab ID Sample identifier for sediment lab 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. Producer defined Unique identifier for samples; assigned in the sediment lab. Date Collected Date in month/day/year format of sample collection. Producer defined 11/22/2021 02/01/2022 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 Sample location within the water column relative to either the seafloor (bed) or the air-water interface (surface). Producer defined Values indicating sampling locations within the water column. Values followed by "cmbs" were collected in centimeters below the surface (air-water interface) of the water. Values followed by cmab were collected in centimeters above the bed. Relative position in the watercolumn is provided where specific distance was not measured. Latitude Latitude of sample location in decimal degrees, north. Producer defined 37.58217 37.58876 Decimal degrees Longitude Longitude of sample location in decimal degrees, east. Producer defined -122.17121 -122.14124 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 bottle Producer defined grab Samples were collected using a sample bottle Producer defined Total Depth (m) Water depth at time of sampling. "NA" indicates depth was not recorded Producer defined 0.0 4.0 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 Aliquit Volume mL The volume of sample used for the analysis. producer defined 63.0 243.0 milliliters Sediment Weight The weight of the sediment. "NA" indicates that no value was calculated. producer defined 0.5 34.0 milligrams Suspended Sediment Concentration mg/L The suspended sediment concentration from the sample. "NA" indicates that no value was calculated. producer defined 4.40 198.49 milligram per liter U.S. Geological Survey - CMGDS mailing and physical

2885 Mission Street

Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov These data are available in csv format (WTW21_SSC_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 0.018 https://doi.org/10.5066/P972R6AW Data can be downloaded using the Network_Resource_Name link and scrolling down to the Environmental Data section. None. The data is 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. 20230419 PCMSC Science Data Coordinator U.S. Geological Survey, Pacific Coastal and Marine Science Center mailing and physical

2885 Mission Street

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