Grain size and bulk density from Little Holland Tract and Liberty Island, Sacramento-San Joaquin Delta, California, 2015 to 2019

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Frequently anticipated questions:


What does this data set describe?

Title:
Grain size and bulk density from Little Holland Tract and Liberty Island, Sacramento-San Joaquin Delta, California, 2015 to 2019
Abstract:
Grain size distribution and bulk density are reported for sediment samples from two flooded agricultural tracts, Little Holland Tract and Liberty Island, in the Sacramento-San Joaquin Delta, California. Samples were repeatedly collected at 8 sites using a Ponar grab or push core samplers during 19 visits to the study area from 2015 to 2019. The long-term time series data collection stations (sites LWA, HVB, HWC, and LVB) were sampled on almost every field survey, and the remaining sites were sampled 6 or times or fewer, some only once. All samples were analyzed for grain size distribution and some were analyzed for bulk density. These data provide insight into how particle size distributions varied spatially and temporally.
Supplemental_Information:
  1. How might this data set be cited?
    Lacy, Jessica R, Dailey, Evan T, and Carlson, Emily M, 2020, Grain size and bulk density from Little Holland Tract and Liberty Island, Sacramento-San Joaquin Delta, California, 2015 to 2019: data release doi:10.5066/F7V1241K, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Lacy, Jessica R, Dailey, Evan T, and Carlson, Emily M, 2020, Bed sediment properties in Little Holland Tract and Liberty Island, Sacramento-San Joaquin Delta, California, 2014 to 2019 (ver. 2.0, May 2020): data release doi:10.5066/F7V1241K, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -121.6739
    East_Bounding_Coordinate: -121.6579
    North_Bounding_Coordinate: 38.333489
    South_Bounding_Coordinate: 38.26705
  3. What does it look like?
    https://www.sciencebase.gov/catalog/file/get/5eb5ceaf82ce25b5135ae895?name=LHT-LI_SampleMeans_Sites2015to2019.png&allowOpen=true (PNG)
    Image map showing median grain size (excluding gravel) averaged over the study period, and the ratio of sand, silt, and clay at each sampling location.
    https://www.sciencebase.gov/catalog/file/get/5eb5ceaf82ce25b5135ae895?name=sand_fines_sb.png&allowOpen=true (PNG)
    Plots showing percent fines (red) and percent sand (black) in surficial sediments collected between July 2015 and August 2019 at four stations in Little Holland Tract and Liberty Island.
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 03-Aug-2015
    Ending_Date: 21-Aug-2019
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: Comma-separated values
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      Indirect_Spatial_Reference:
      Data were collected in the Little Holland Tract and Liberty Island, Sacramento-San Joaquin Delta, California
      This is a Point data set.
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 1.0E-5. Longitudes are given to the nearest 1.0E-5. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is World Geodetic System 1984 (WGS84).
      The ellipsoid used is WGS84.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.
  7. How does the data set describe geographic features?
    GrainSizeBD_LHT-LI_2015to2019.csv
    Table containing attribute information associated with the dataset (Source: Producer defined)
    FACS/FAN I.D.
    Unique U.S. Geological Survey field activity identifier. (Source: Producer defined) Unique U.S. Geological Survey field activity identifier.
    Sample I.D.
    Sample identifier (Source: Producer defined) Unique identifier for samples; assigned in the field.
    Lab I.D.
    Sample identifier for sediment lab (Source: Producer defined) Unique identifier for samples; assigned in the sediment lab.
    Date Collected
    Date in month/day/year format of sample collection. (Source: Producer defined)
    Range of values
    Minimum:08/03/2015
    Maximum:08/20/2019
    Units:Date in month/day/year format
    Time (PDT)
    Time of sample collection, in hours:minutes:seconds format, Pacific Daylight Time (PDT). (Source: Producer defined)
    Range of values
    Minimum:00:00:00
    Maximum:23:59:59
    Units:hours:minutes:seconds format, Pacific Daylight Time (PDT)
    Site
    Unique identifier of sampling locations. (Source: Producer defined) Unique identifier of sampling locations.
    Latitude
    Latitude of sample location in decimal degrees, north. (Source: Producer defined)
    Range of values
    Minimum:38.26705
    Maximum:39.26728
    Units:Decimal degrees
    Longitude
    Longitude of sample location in decimal degrees, east. (Source: Producer defined)
    Range of values
    Minimum:-122.6737
    Maximum:-121.6579
    Units:Decimal degrees
    Sample Type
    Type of sample collected (Source: Producer defined)
    ValueDefinition
    Sediment coreSample collected with push-type sediment corer
    PonarSample collected with Ponar grab sampler
    ScrapeSample collected by scraping accumulated sediment off of equipment that had been previously deployed
    grabSample collected by hand grab
    Core Depth
    The midpoint of the depth into the sediment bed of the sample; all sections were 1 cm thick unless noted in "Sample Notes" column (Source: Producer defined)
    ValueDefinition
    NADepth not applicable or known for sample, see "Sample Notes" column
    Range of values
    Minimum:0.0
    Maximum:9.0
    Units:centimeters
    Sample Notes
    Any relevant notes relating to sample (Source: Producer defined) Any relevant notes relating to sample
    Wt. percent in -4.00 phi bin or 16 mm bin
    Weight percent of sample with grain diameter greater than -4.00 phi, or 16 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:30.81
    Units:percentage
    Wt. percent in -3.75 phi bin or 13.5 mm bin
    Weight percent of sample with grain diameter between -4.00 and -3.75 phi, or 13.5 and 16 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:1.9909999999999999
    Units:percentage
    Wt. percent in -3.50 phi bin or 11.2 mm bin
    Weight percent of sample with grain diameter between -3.75 and -3.50 phi, or 11.2 and 13.5 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:6.595
    Units:percentage
    Wt. percent in -3.25 phi bin or 9.51 mm bin
    Weight percent of sample with grain diameter between -3.50 and -3.25 phi, or 9.51 and 11.2 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.0
    Units:percentage
    Wt. percent in -3.00 phi bin or 8 mm bin
    Weight percent of sample with grain diameter between -3.25 and -3.00 phi, or 8 and 9.51 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:41.82
    Units:percentage
    Wt. percent in -2.75 phi bin or 6.73 mm bin
    Weight percent of sample with grain diameter between -3.00 and -2.75 phi, or 6.73 and 8 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:3.2039999999999997
    Units:percentage
    Wt. percent in -2.50 phi bin or 5.66 mm bin
    Weight percent of sample with grain diameter between -2.75 and -2.50 phi, or 5.66 and 6.73 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:16.762999999999998
    Units:percentage
    Wt. percent in -2.25 phi bin or 4.76 mm bin
    Weight percent of sample with grain diameter between -2.50 and -2.25 phi, or 4.76 and 5.66 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:7.084
    Units:percentage
    Wt. percent in -2.00 phi bin or 4 mm bin
    Weight percent of sample with grain diameter between -2.25 and -2.00 phi, or 4 and 4.76 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:6.707000000000001
    Units:percentage
    Wt. percent in -1.75 phi bin or 3.36 mm bin
    Weight percent of sample with grain diameter between -2.00 and -1.75 phi, or 3.36 and 4 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:8.127
    Units:percentage
    Wt. percent in -1.50 phi bin or 2.83 mm bin
    Weight percent of sample with grain diameter between -1.75 and -1.50 phi, or 2.83 and 3.36 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:3.483
    Units:percentage
    Wt. percent in -1.25 phi bin or 2.38 mm bin
    Weight percent of sample with grain diameter between -1.50 and -1.25 phi, or 2.38 and 2.83 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:5.697
    Units:percentage
    Wt. percent in -1.00 phi bin or 2 mm bin
    Weight percent of sample with grain diameter between -1.25 and -1.00 phi, or 2 and 2.38 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:3.307
    Units:percentage
    Wt. percent in -0.75 phi bin or 1.68 mm bin
    Weight percent of sample with grain diameter between -1.00 and -0.75 phi, or 1.68 and 2 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:2.198
    Units:percentage
    Wt. percent in -0.50 phi bin or 1.41 mm bin
    Weight percent of sample with grain diameter between -0.75 and -0.50 phi, or 1.41 and 1.68 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:3.2510000000000003
    Units:percentage
    Wt. percent in -0.25 phi bin or 1.19 mm bin
    Weight percent of sample with grain diameter between -0.50 and -0.25 phi, or 1.19 and 1.41 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:2.742
    Units:percentage
    Wt. percent in 0.00 phi bin or 1 mm bin
    Weight percent of sample with grain diameter between -0.25 and 0.00 phi, or 1 and 1.19 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:2.3930000000000002
    Units:percentage
    Wt. percent in 0.25 phi bin or 0.8409 mm bin
    Weight percent of sample with grain diameter between 0.00 and 0.25 phi, or 0.8409 and 1 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:2.431
    Units:percentage
    Wt. percent in 0.50 phi bin or 0.7071 mm bin
    Weight percent of sample with grain diameter between 0.25 and 0.50 phi, or 0.7071 and 0.8409 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:3.218
    Units:percentage
    Wt. percent in 0.75 phi bin or 0.5946 mm bin
    Weight percent of sample with grain diameter between 0.50 and 0.75 phi, or 0.5946 and 0.7071 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:4.584
    Units:percentage
    Wt. percent in 1.00 phi bin or 0.5 mm bin
    Weight percent of sample with grain diameter between 0.75 and 1.00 phi, or 0.5 and 0.5946 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:6.0329999999999995
    Units:percentage
    Wt. percent in 1.25 phi bin or 0.4204 mm bin
    Weight percent of sample with grain diameter between 1.00 and 1.25 phi, or 0.4204 and 0.5 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:8.413
    Units:percentage
    Wt. percent in 1.50 phi bin or 0.3536 mm bin
    Weight percent of sample with grain diameter between 1.25 and 1.50 phi, or 0.3536 and 0.4204 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:13.294
    Units:percentage
    Wt. percent in 1.75 phi bin or 0.2973 mm bin
    Weight percent of sample with grain diameter between 1.50 and 1.75 phi, or 0.2973 and 0.3536 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:16.617
    Units:percentage
    Wt. percent in 2.00 phi bin or 0.25 mm bin
    Weight percent of sample with grain diameter between 1.75 and 2.00 phi, or 0.25 and 0.2973 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:16.529
    Units:percentage
    Wt. percent in 2.25 phi bin or 0.2102 mm bin
    Weight percent of sample with grain diameter between 2.00 and 2.25 phi, or 0.2102 and 0.25 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:12.944
    Units:percentage
    Wt. percent in 2.50 phi bin or 0.1768 mm bin
    Weight percent of sample with grain diameter between 2.25 and 2.50 phi, or 0.1768 and 0.2102 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:9.802
    Units:percentage
    Wt. percent in 2.75 phi bin or 0.1487 mm bin
    Weight percent of sample with grain diameter between 2.50 and 2.75 phi, or 0.1487 and 0.1768 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:10.885
    Units:percentage
    Wt. percent in 3.00 phi bin or 0.125 mm bin
    Weight percent of sample with grain diameter between 2.75 and 3.00 phi, or 0.125 and 0.1487 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:9.286
    Units:percentage
    Wt. percent in 3.25 phi bin or 0.1051 mm bin
    Weight percent of sample with grain diameter between 3.00 and 3.25 phi, or 0.1051 and 0.125 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:6.209
    Units:percentage
    Wt. percent in 3.50 phi bin or 0.08839 mm bin
    Weight percent of sample with grain diameter between 3.25 and 3.50 phi, or 0.08839 and 0.1051 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:4.1530000000000005
    Units:percentage
    Wt. percent in 3.75 phi bin or 0.07433 mm bin
    Weight percent of sample with grain diameter between 3.50 and 3.75 phi, or 0.07433 and 0.08839 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:4.25
    Units:percentage
    Wt. percent in 4.00 phi bin or 0.0625 mm bin
    Weight percent of sample with grain diameter between 3.75 and 4.00 phi, or 0.0625 and 0.07433 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:4.04
    Units:percentage
    Wt. percent in 4.25 phi bin or 0.052556 mm bin
    Weight percent of sample with grain diameter between 4.00 and 4.25 phi, or 0.052556 and 0.0625 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:3.6510000000000002
    Units:percentage
    Wt. percent in 4.50 phi bin or 0.044194 mm bin
    Weight percent of sample with grain diameter between 4.25 and 4.50 phi, or 0.044194 and 0.052556 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.008
    Maximum:3.273
    Units:percentage
    Wt. percent in 4.75 phi bin or 0.037163 mm bin
    Weight percent of sample with grain diameter between 4.50 and 4.75 phi, or 0.037163 and 0.044194 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.079
    Maximum:3.0
    Units:percentage
    Wt. percent in 5.00 phi bin or 0.03125 mm bin
    Weight percent of sample with grain diameter between 4.75 and 5.00 phi, or 0.03125 and 0.037163 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.193
    Maximum:2.9160000000000004
    Units:percentage
    Wt. percent in 5.25 phi bin or 0.02628 mm bin
    Weight percent of sample with grain diameter between 5.00 and 5.25 phi, or 0.02628 and 0.03125 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.212
    Maximum:2.798
    Units:percentage
    Wt. percent in 5.50 phi bin or 0.0221 mm bin
    Weight percent of sample with grain diameter between 5.25 and 5.50 phi, or 0.0221 and 0.02628 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.21100000000000002
    Maximum:2.827
    Units:percentage
    Wt. percent in 5.75 phi bin or 0.01858 mm bin
    Weight percent of sample with grain diameter between 5.50 and 5.75 phi, or 0.01858 and 0.0221 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.21100000000000002
    Maximum:2.8930000000000002
    Units:percentage
    Wt. percent in 6.00 phi bin or 0.01563 mm bin
    Weight percent of sample with grain diameter between 5.75 and 6.00 phi, or 0.01563 and 0.01858 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.23800000000000002
    Maximum:2.786
    Units:percentage
    Wt. percent in 6.25 phi bin or 0.01314 mm bin
    Weight percent of sample with grain diameter between 6.00 and 6.25 phi, or 0.01314 and 0.01563 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.312
    Maximum:3.116
    Units:percentage
    Wt. percent in 6.50 phi bin or 0.01105 mm bin
    Weight percent of sample with grain diameter between 6.25 and 6.50 phi, or 0.01105 and 0.01314 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.392
    Maximum:3.66
    Units:percentage
    Wt. percent in 6.75 phi bin or 0.00929 mm bin
    Weight percent of sample with grain diameter between 6.50 and 6.75 phi, or 0.00929 and 0.01105 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.45899999999999996
    Maximum:4.351
    Units:percentage
    Wt. percent in 7.00 phi bin or 0.00781 mm bin
    Weight percent of sample with grain diameter between 6.75 and 7.00 phi, or 0.00781 and 0.00929 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.514
    Maximum:4.9110000000000005
    Units:percentage
    Wt. percent in 7.25 phi bin or 0.00657 mm bin
    Weight percent of sample with grain diameter between 7.00 and 7.25 phi, or 0.00657 and 0.00781 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.561
    Maximum:5.511
    Units:percentage
    Wt. percent in 7.50 phi bin or 0.00552 mm bin
    Weight percent of sample with grain diameter between 7.25 and 7.50 phi, or 0.00552 and 0.00657 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.606
    Maximum:6.331
    Units:percentage
    Wt. percent in 7.75 phi bin or 0.00465 mm bin
    Weight percent of sample with grain diameter between 7.50 and 7.75 phi, or 0.00465 and 0.00552 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.625
    Maximum:6.771
    Units:percentage
    Wt. percent in 8.00 phi bin or 0.00391 mm bin
    Weight percent of sample with grain diameter between 7.75 and 8.00 phi, or 0.00391 and 0.00465 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.65
    Maximum:7.239
    Units:percentage
    Wt. percent in 8.25 phi bin or 0.00329 mm bin
    Weight percent of sample with grain diameter between 8.00 and 8.25 phi, or 0.00329 and 0.00391 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.6579999999999999
    Maximum:7.513999999999999
    Units:percentage
    Wt. percent in 8.50 phi bin or 0.00276 mm bin
    Weight percent of sample with grain diameter between 8.25 and 8.50 phi, or 0.00276 and 0.00329 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.632
    Maximum:7.306
    Units:percentage
    Wt. percent in 8.75 phi bin or 0.00232 mm bin
    Weight percent of sample with grain diameter between 8.50 and 8.75 phi, or 0.00232 and 0.00276 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.61
    Maximum:7.058
    Units:percentage
    Wt. percent in 9.00 phi bin or 0.00195 mm bin
    Weight percent of sample with grain diameter between 8.75 and 9.00 phi, or 0.00195 and 0.00232 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.573
    Maximum:6.6129999999999995
    Units:percentage
    Wt. percent in 9.25 phi bin or 0.00164 mm bin
    Weight percent of sample with grain diameter between 9.00 and 9.25 phi, or 0.00164 and 0.00195 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.525
    Maximum:6.039
    Units:percentage
    Wt. percent in 9.50 phi bin or 0.00138 mm bin
    Weight percent of sample with grain diameter between 9.25 and 9.50 phi, or 0.00138 and 0.00164 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.479
    Maximum:5.478
    Units:percentage
    Wt. percent in 9.75 phi bin or 0.00116 mm bin
    Weight percent of sample with grain diameter between 9.50 and 9.75 phi, or 0.00116 and 0.00138 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.436
    Maximum:5.071000000000001
    Units:percentage
    Wt. percent in 10.00 phi bin or 0.00098 mm bin
    Weight percent of sample with grain diameter between 9.75 and 10.00 phi, or 0.00098 and 0.00116 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.373
    Maximum:4.592
    Units:percentage
    Wt. percent in 10.25 phi bin or 0.00082 mm bin
    Weight percent of sample with grain diameter between 10.00 and 10.25 phi, or 0.00082 and 0.00098 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.331
    Maximum:4.387
    Units:percentage
    Wt. percent in 10.50 phi bin or 0.00069 mm bin
    Weight percent of sample with grain diameter between 10.25 and 10.50 phi, or 0.00069 and 0.00082 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.255
    Maximum:3.625
    Units:percentage
    Wt. percent in 10.75 phi bin or 0.00058 mm bin
    Weight percent of sample with grain diameter between 10.50 and 10.75 phi, or 0.00058 and 0.00069 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.188
    Maximum:2.912
    Units:percentage
    Wt. percent in 11.00 phi bin or 0.00049 mm bin
    Weight percent of sample with grain diameter between 10.75 and 11.00 phi, or 0.00049 and 0.00058 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.11699999999999999
    Maximum:2.013
    Units:percentage
    Wt. percent in 11.25 phi bin or 0.0004 mm bin
    Weight percent of sample with grain diameter between 11.00 and 11.25 phi, or 0.0004 and 0.00049 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.064
    Maximum:1.143
    Units:percentage
    Wt. percent in 11.50 phi bin or 0.00035 mm bin
    Weight percent of sample with grain diameter between 11.25 and 11.50 phi, or 0.00035 and 0.0004 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.015
    Maximum:0.264
    Units:percentage
    Wt. percent in 12.00 phi bin or 0.000241 mm bin
    Weight percent of sample with grain diameter between 11.50 and 12.02 phi, or 0.000241 and 0.00035 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.0
    Units:percentage
    Wt. percent in 13.00 phi bin or 0.00012 mm bin
    Weight percent of sample with grain diameter between 12.00 and 13.00 phi, or 0.00012 and 0.000241 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.0
    Units:percentage
    Percent Mud
    Percent of sample less than 63 microns, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:5.6
    Maximum:100.0
    Units:Percentage
    Percent Sand
    Percent of sample less than 2 mm and greater than 63 microns, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.0
    Maximum:91.73899999999999
    Units:Percentage
    Percent Gravel
    Percent of sample greater than 2 mm, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.0
    Maximum:42.887
    Units:Percentage
    Gravel/Sand
    Ratio of gravel to sand in sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.0
    Maximum:3.367
    Sand/Silt
    Ratio of sand to silt in sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.0
    Maximum:15.765999999999998
    Silt/Clay
    Ratio of silt to clay in sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.619
    Maximum:1.999
    Sand/Clay
    Ratio of sand to clay in sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.0
    Maximum:16.541
    Sand/Mud
    Ratio of sand to mud in sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.0
    Maximum:8.072000000000001
    Gravel/Mud
    Ratio of gravel to mud in sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.0
    Maximum:1.536
    D5 Phi
    Phi size at D5 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:-4.0
    Maximum:6.309
    Units:Phi size
    D10 Phi
    Phi size at D10 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:-4.0
    Maximum:6.734
    Units:Phi size
    D16 Phi
    Phi size at D16 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:-4.0
    Maximum:7.091
    Units:Phi size
    D25 Phi
    Phi size at D25 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:-4.0
    Maximum:7.494
    Units:Phi size
    D50 Phi
    Phi size at D50 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.355
    Maximum:8.392000000000001
    Units:Phi size
    D75 Phi
    Phi size at D75 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:2.227
    Maximum:9.455
    Units:Phi size
    D84 Phi
    Phi size at D84 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:2.51
    Maximum:9.908
    Units:Phi size
    D90 Phi
    Phi size at D90 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:5.371
    Maximum:10.25
    Units:Phi size
    D95 Phi
    Phi size at D95 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:8.113999999999999
    Maximum:10.614
    Units:Phi size
    F-W Median
    Phi size median for sample by Folk and Ward (1957) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.355
    Maximum:8.392000000000001
    Units:Phi size
    F-W Mean
    Phi size mean for sample by Folk and Ward (1957) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.34
    Maximum:8.427999999999999
    Units:Phi size
    F-W Sorting
    sorting for sample by Folk and Ward (1957) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.314
    Maximum:4.956
    Units:Phi size
    F-W Skewness
    skewness for sample by Folk and Ward (1957) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:-0.509
    Maximum:0.5670000000000001
    Units:Phi size
    F-W Kurtosis
    Kurtosis for sample by Folk and Ward (1957) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.589
    Maximum:3.7060000000000004
    Units:Phi size
    Inman Median
    Phi size median for sample by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.355
    Maximum:8.392000000000001
    Units:Phi size
    Inman Mean
    Phi size mean for sample by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.8319999999999999
    Maximum:8.447000000000001
    Units:Phi size
    Inman Sorting
    sorting for sample by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.638
    Maximum:5.832000000000001
    Units:Phi size
    Inman Skew 16-84
    skewness for sample (D16-D84) by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:-0.5
    Maximum:0.675
    Units:Phi size
    Inman Skew 05-95
    skewness for sample (D5-D95) by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:-1.794
    Maximum:4.184
    Units:Phi size
    Inman Kurtosis
    Kurtosis for sample by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.031
    Maximum:4.727
    Units:Phi size
    Trask Median
    mm size median for sample by Trask (1930) method in mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.003
    Maximum:0.782
    Units:millimeters
    Trask Mean
    mm size mean for sample by Trask (1930) method in mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.004
    Maximum:8.012
    Units:millimeters
    Trask Sorting
    sorting for sample by Trask (1930) method in mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.3230000000000002
    Maximum:25.659000000000002
    Units:millimeters
    Trask Skewness
    skewness for sample by Trask (1930) method in mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.055
    Maximum:7.019
    Units:millimeters
    Trask Kurtosis
    kurtosis for sample by Trask (1930) method in mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.002
    Maximum:0.6579999999999999
    Units:millimeters
    Mean Phi
    phi size mean for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.063
    Maximum:8.394
    Units:Phi size
    Mean mm
    mm size mean for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.003
    Maximum:0.478
    Units:millimeters
    Variance
    variance for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.706
    Maximum:23.958000000000002
    Units:Phi size
    Std. Dev.
    standard deviation for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.306
    Maximum:4.895
    Units:Phi size
    Skewness
    skewness for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:-2.325
    Maximum:2.2969999999999997
    Units:Phi size
    Kurtosis
    kurtosis for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.585
    Maximum:9.713
    Units:Phi size
    Mode in Phi
    Mode of sample in phi units. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:-3.875
    Maximum:8.377
    Units:Phi size
    Mode in Phi 2
    Mode of sample in phi units. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:-2.875
    Maximum:8.377
    Units:Phi size
    Mode in Phi 3
    Mode of sample in phi units. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:-1.375
    Maximum:8.377
    Units:Phi size
    Mode in Phi 4
    Mode of sample in phi units. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.625
    Maximum:8.377
    Units:Phi size
    Mode in Phi 5
    Mode of sample in phi units. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:8.125
    Maximum:8.377
    Units:Phi size
    Bag Weight
    The weight of the empty sample bag, "NA" indicates that no value was calculated, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:3.2319999999999998
    Maximum:3.3680000000000003
    Units:grams
    Bag and Wet Sediment Weight
    The weight of the initial wet sample, as it was collected in the sample bag, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:12.850999999999999
    Maximum:113.81
    Units:grams
    Dry Sediment Weight
    The weight of the dried sediment in the sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:2.523
    Maximum:74.31
    Units:grams
    Bulk Density
    The bulk density of the sample, calculated as the mass of the dry sediment divided by the volumn of the initial sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.135
    Maximum:1.939
    Units:grams per cubic centimeter

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Jessica R Lacy
    • Evan T Dailey
    • Emily M Carlson
  2. Who also contributed to the data set?
    Data collection was funded by U.S. Geological Survey and U.S. Bureau of Reclamation
  3. To whom should users address questions about the data?
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Attn: PCMSC Science Data Coordinator
    2885 Mission Street
    Santa Cruz, CA

    831-427-4747 (voice)
    pcmsc_data@usgs.gov

Why was the data set created?

These data will be used to inform studies of sediment resuspension and transport in Liberty Island and Little Holland Tract and to evaluate the potential for flooded agricultural tracts to contribute to elevated turbidity in adjacent waters.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: Aug-2019 (process 1 of 6)
    Sediment samples were collected from 2015 to 2019 using a Ponar grab or push core sampler. Sampling positions were recorded using a handheld global navigation satellite system (GNSS) receiver.
    Date: 2017 (process 2 of 6)
    The grain-size distributions of samples were determined in the USGS Pacific Coastal and Marine Science Center sediment lab. Approximately 20 g of sediment was sub-sampled and 10 mL of 35 percent hydrogen peroxide was added to remove organic material in the sample. The sample was heated at 250 degrees C to remove any remaining hydrogen peroxide and was placed in an ultrasonic bath to liberate the fine fraction. Subsequently, the sample was centrifuged for 1.5 hours to remove soluble salts. Samples were funneled through a 2 mm and a 63 um sieve to separate the gravel (greater than 2 mm), sand (63 um to 2 mm), and mud (less than 63 um). The sand and gravel fractions were dried in an 80 degree C oven and weighed. Five mL of sodium hexametaphosphate was added to the mud fraction and a 20 mL aliquot was taken from a 1 L graduated cylinder to determine the weight of the mud. The particle-size distribution of the mud and sand fractions was analyzed separately using a Beckman Coulter LS 13 320, and the gravel, sand, and mud results were integrated into a single grain-size distribution for each sample. Where used, phi sizes are equal to the negative log base 2 of millimeter size.
    Date: 2017 (process 3 of 6)
    Bulk density was calculated by weighing the sample bag, the wet sample in the bag, and the dry sample in the bag. Measurements were made in the USGS Pacific Coastal and Marine Science Center sediment lab. The bulk density reported here was calculated as: water density (1 g/cm3) times sediment density (2.65 g/cm3) divided by water density plus the product of sediment density minus sediment density and water content of the sample.
    Date: 2020 (process 4 of 6)
    Additional samples from 2018 and 2019 were processed using the above steps. From January 2017 until October 2019, the Pacific Coastal and Marine Science Center sediment lab's Beckman Coulter LS 13 320 particle size analyzer had a low sensitivity issue, resulting in under-reporting of the coarse silt range from 4 to 5.5 phi, and slightly skewed distribution of the mud grain size parameters. Samples from that time period were re-analyzed during 2020, and the updated results are presented in version 2.0 of the data.
    Date: 19-Oct-2020 (process 5 of 6)
    Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 13-Oct-2021 (process 6 of 6)
    Performed minor edits to the metadata to correct typos. No data were changed Person who carried out this activity:
    U.S. Geological Survey
    Attn: Susan A. Cochran
    Geologist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7545 (voice)
    scochran@usgs.gov
  3. What similar or related data should the user be aware of?
    Lacy, Jessica R, and Carlson, Emily M, 2016, Wind-wave and suspended-sediment data from Liberty Island and Little Holland Tract, Sacramento-San Joaquin Delta, California: data release doi:10.5066/F73R0R07, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    Snyder, Alex G, Stevens, Andrew W, Carlson, Emily M, and Lacy, Jessica R, 2016, Digital elevation model of Little Holland Tract, Sacramento-San Joaquin Delta, California, 2015: data release doi:10.5066/F7RX9954, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    Folk, Robert Louis, and Ward, William C., 1957, Brazos River bar; a study in the significance of grain size parameters: Journal article Journal of Sedimentary Research, v. 27, n. 1, p. 3-26, SEPM Society for Sedimentary Geology, Boulder, CO.

    Online Links:

    Inman, Douglas Lamar, 1952, Measures for describing the size distribution of sediments: Journal article Journal of Sedimentary Research, v. 22, n. 3, p. 125-145, SEPM Society for Sedimentary Geology, Boulder, CO.

    Online Links:

    Trask, Parker D., 1930, Mechanical analyses of sediments by centrifuge: Journal article Economic Geology, v. 26, n. 6, p. 581-599, Society of Economic Geologists (SEG), Littleton, CO.

    Online Links:


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    Data values are within the expected values.
  2. How accurate are the geographic locations?
    Horizontal accuracy derived from GPS instrumentation is less than 1 m.
  3. How accurate are the heights or depths?
    No formal positional accuracy tests were conducted
  4. Where are the gaps in the data? What is missing?
    Data set 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.
  5. How consistent are the relationships among the observations, including topology?
    Data values are within the expected values.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: none
Use_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.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey - ScienceBase
    U.S. Geological Survey
    Denver Federal Center, Building 810, Mail Stop 302
    Denver, CO
    United States

    1-888-275-8747 (voice)
    sciencebase@usgs.gov
  2. What's the catalog number I need to order this data set? These data are available in csv format (GrainSizeBD_LHT-LI_2015to2019.csv) along with CSDGM FGDC-compliant metadata.
  3. What legal disclaimers am I supposed to read?
    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.
  4. How can I download or order the data?
  5. What hardware or software do I need in order to use the data set?
    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.

Who wrote the metadata?

Dates:
Last modified: 13-Oct-2021
Metadata author:
PCMSC Science Data Coordinator
U.S. Geological Survey, Pacific Coastal and Marine Science Center
2885 Mission Street
Santa Cruz, CA
United States

831-427-4747 (voice)
pcmsc_data@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

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