Sediment grain size at river outlets along the California coast

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What does this data set describe?

1. How might this data set be cited?
   Dow, Helen W., 20240103, Sediment grain size at river outlets along the California coast: Data release DOI:10.5066/P99V17HO, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

   Online Links:

   • https://doi.org/10.5066/P99V17HO

   Other_Citation_Details:

   Suggested Citation: Dow, H.W., 2024, Sediment grain size at river outlets along the California coast: U.S. Geological Survey data release, https://doi.org/10.5066/P99V17HO.

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -124.32012
   East_Bounding_Coordinate: -121.10447
   North_Bounding_Coordinate: 41.29924
   South_Bounding_Coordinate: 35.56820
   

3. What does it look like?

   https://www.sciencebase.gov/catalog/file/get/6532dd2fd34ee4b6e05bb128?name=Waddell.jpg&allowOpen=true (JPEG)

   Sediment sampling site at Waddell Creek, California

4. Does the data set describe conditions during a particular time period?

   Calendar_Date: 04-May-2022

   Currentness_Reference:

   ground condition on days of sample collection

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: comma-delimited text
   

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point (130)
   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 0.00001. Longitudes are given to the nearest 0.00001. Latitude and longitude values are specified in Decimal Degrees. The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      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?

   Attribute table

   Table of data (Source: producer defined)

   Watershed

   Name of river or watershed where sample was collected (Source: producer defined) place names

   Sample_ID

   Name of sample (Source: producer defined) unique identifier for each sample

   Date_Collected

   Date of sample collection (Source: producer defined)

   Range of values
   Minimum:	2022-05-04
   Maximum:	2022-08-24
   Units:	yyyy-mm-dd

   Description

   Field description of sampled material. “N/A” indicates Not Available, no description noted about a sample (Source: producer defined) text to describe the sample

   Latitude_NAD83

   Latitude of sample (Source: producer defined)

   Range of values
   Minimum:	35.56820
   Maximum:	41.29924
   Units:	decimal degrees
   Resolution:	0.00001

   Longitude_NAD83

   Longitude of sample (Source: producer defined)

   Range of values
   Minimum:	-124.32012
   Maximum:	-121.10447
   Units:	decimal degrees
   Resolution:	0.00001

   -4.00phi_16mm

   Weight percent of sample with grain diameter greater than -4.00 phi, or 16 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   -3.75phi_13.5mm

   Weight percent of sample with grain diameter between -4.00 and -3.75 phi, or 13.5 and 16 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   -3.50phi_11.2mm

   Weight percent of sample with grain diameter between -3.75 and -3.50 phi, or 11.2 and 13.5 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   -3.25phi_9.51mm

   Weight percent of sample with grain diameter between -3.50 and -3.25 phi, or 9.51 and 11.2 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   -3.00phi_8mm

   Weight percent of sample with grain diameter between -3.25 and -3.00 phi, or 8 and 9.51 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   -2.75phi_6.73mm

   Weight percent of sample with grain diameter between -3.00 and -2.75 phi, or 6.73 and 8 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   -2.50phi_5.66mm

   Weight percent of sample with grain diameter between -2.75 and -2.50 phi, or 5.66 and 6.73 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   -2.25phi_4.76mm

   Weight percent of sample with grain diameter between -2.50 and -2.25 phi, or 4.76 and 5.66 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   -2.00phi_4mm

   Weight percent of sample with grain diameter between -2.25 and -2.00 phi, or 4 and 4.76 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   -1.75phi_3.36mm

   Weight percent of sample with grain diameter between -2.00 and -1.75 phi, or 3.36 and 4 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   -1.50phi_2.83mm

   Weight percent of sample with grain diameter between -1.75 and -1.50 phi, or 2.83 and 3.36 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   -1.25phi_2.38mm

   Weight percent of sample with grain diameter between -1.50 and -1.25 phi, or 2.38 and 2.83 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   -1.00phi_2mm

   Weight percent of sample with grain diameter between -1.25 and -1.00 phi, or 2 and 2.38 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   -0.75phi_1.68mm

   Weight percent of sample with grain diameter between -1.00 and -0.75 phi, or 1.68 and 2 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   -0.50phi_1.41mm

   Weight percent of sample with grain diameter between -0.75 and -0.50 phi, or 1.41 and 1.68 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   -0.25phi_1.19mm

   Weight percent of sample with grain diameter between -0.50 and -0.25 phi, or 1.19 and 1.41 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   0.00phi_1mm

   Weight percent of sample with grain diameter between -0.25 and 0.00 phi, or 1 and 1.19 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   0.25phi_0.8409mm

   Weight percent of sample with grain diameter between 0.00 and 0.25 phi, or 0.8409 and 1 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   0.50phi_0.7071mm

   Weight percent of sample with grain diameter between 0.25 and 0.50 phi, or 0.7071 and 0.8409 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   0.75phi_0.5946mm

   Weight percent of sample with grain diameter between 0.50 and 0.75 phi, or 0.5946 and 0.7071 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   1.00phi_0.5mm

   Weight percent of sample with grain diameter between 0.75 and 1.00 phi, or 0.5 and 0.5946 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   1.25phi_0.4204mm

   Weight percent of sample with grain diameter between 1.00 and 1.25 phi, or 0.4204 and 0.5 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   1.50phi_0.3536mm

   Weight percent of sample with grain diameter between 1.25 and 1.50 phi, or 0.3536 and 0.4204 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   1.75phi_0.2973mm

   Weight percent of sample with grain diameter between 1.50 and 1.75 phi, or 0.2973 and 0.3536 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   2.00phi_0.25mm

   Weight percent of sample with grain diameter between 1.75 and 2.00 phi, or 0.25 and 0.2973 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   2.25phi_0.2102mm

   Weight percent of sample with grain diameter between 2.00 and 2.25 phi, or 0.2102 and 0.25 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   2.50phi_0.1768mm

   Weight percent of sample with grain diameter between 2.25 and 2.50 phi, or 0.1768 and 0.2102 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   2.75phi_0.1487mm

   Weight percent of sample with grain diameter between 2.50 and 2.75 phi, or 0.1487 and 0.1768 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   3.00phi_0.125mm

   Weight percent of sample with grain diameter between 2.75 and 3.00 phi, or 0.125 and 0.1487 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   3.25phi_0.1051mm

   Weight percent of sample with grain diameter between 3.00 and 3.25 phi, or 0.1051 and 0.125 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   3.50phi_0.088388mm

   Weight percent of sample with grain diameter between 3.25 and 3.50 phi, or 0.088388 and 0.1051 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   3.75phi_0.074325mm

   Weight percent of sample with grain diameter between 3.50 and 3.75 phi, or 0.074325 and 0.088388 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   4.00phi_0.0625mm

   Weight percent of sample with grain diameter between 3.75 and 4.00 phi, or 0.0625 and 0.074325 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   4.25phi_0.052556mm

   Weight percent of sample with grain diameter between 4.00 and 4.25 phi, or 0.052556 and 0.0625 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   4.50phi_0.044194mm

   Weight percent of sample with grain diameter between 4.25 and 4.50 phi, or 0.044194 and 0.052556 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   4.75phi_0.037163mm

   Weight percent of sample with grain diameter between 4.50 and 4.75 phi, or 0.037163 and 0.044194 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   5.00phi_0.03125mm

   Weight percent of sample with grain diameter between 4.75 and 5.00 phi, or 0.03125 and 0.037163 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   5.25phi_0.026278mm

   Weight percent of sample with grain diameter between 5.00 and 5.25 phi, or 0.026278 and 0.03125 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   5.50phi_0.022097mm

   Weight percent of sample with grain diameter between 5.25 and 5.50 phi, or 0.022097 and 0.026278 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   5.75phi_0.018581mm

   Weight percent of sample with grain diameter between 5.50 and 5.75 phi, or 0.018581 and 0.022097 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   6.00phi_0.015625mm

   Weight percent of sample with grain diameter between 5.75 and 6.00 phi, or 0.015625 and 0.018581 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   6.25phi_0.013139mm

   Weight percent of sample with grain diameter between 6.00 and 6.25 phi, or 0.013139 and 0.015625 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   6.50phi_0.011049mm

   Weight percent of sample with grain diameter between 6.25 and 6.50 phi, or 0.011049 and 0.013139 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   6.75phi_0.009291mm

   Weight percent of sample with grain diameter between 6.50 and 6.75 phi, or 0.009291 and 0.011049 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   7.00phi_0.007813mm

   Weight percent of sample with grain diameter between 6.75 and 7.00 phi, or 0.007813 and 0.009291 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   7.25phi_0.00657mm

   Weight percent of sample with grain diameter between 7.00 and 7.25 phi, or 0.00657 and 0.007813 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   7.50phi_0.005524mm

   Weight percent of sample with grain diameter between 7.25 and 7.50 phi, or 0.005524 and 0.00657 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   7.75phi_0.004645mm

   Weight percent of sample with grain diameter between 7.50 and 7.75 phi, or 0.004645 and 0.005524 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   8.00phi_0.003906mm

   Weight percent of sample with grain diameter between 7.75 and 8.00 phi, or 0.003906 and 0.004645 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   8.25phi_0.003285mm

   Weight percent of sample with grain diameter between 8.00 and 8.25 phi, or 0.003285 and 0.003906 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   8.50phi_0.002762mm

   Weight percent of sample with grain diameter between 8.25 and 8.50 phi, or 0.002762 and 0.003285 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   8.75phi_0.002323mm

   Weight percent of sample with grain diameter between 8.50 and 8.75 phi, or 0.002323 and 0.002762 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   9.00phi_0.001953mm

   Weight percent of sample with grain diameter between 8.75 and 9.00 phi, or 0.001953 and 0.002323 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   9.25phi_0.001642mm

   Weight percent of sample with grain diameter between 9.00 and 9.25 phi, or 0.001642 and 0.001953 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   9.50phi_0.001381mm

   Weight percent of sample with grain diameter between 9.25 and 9.50 phi, or 0.001381 and 0.001642 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   9.75phi_0.001161mm

   Weight percent of sample with grain diameter between 9.50 and 9.75 phi, or 0.001161 and 0.001381 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   9.99phi_0.000983mm

   Weight percent of sample with grain diameter between 9.75 and 9.99 phi, or 0.000983 and 0.001161 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   10.25phi_0.000821mm

   Weight percent of sample with grain diameter between 9.99 and 10.25 phi, or 0.000821 and 0.000983 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   10.50phi_0.000691mm

   Weight percent of sample with grain diameter between 10.25 and 10.50 phi, or 0.000691 and 0.000821 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   10.75phi_0.000581mm

   Weight percent of sample with grain diameter between 10.50 and 10.75 phi, or 0.000581 and 0.000691 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   10.99phi_0.000492mm

   Weight percent of sample with grain diameter between 10.75 and 10.99 phi, or 0.000492 and 0.000581 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   11.25phi_0.000411mm

   Weight percent of sample with grain diameter between 10.99 and 11.25 phi, or 0.000411 and 0.000492 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   11.48phi_0.00035mm

   Weight percent of sample with grain diameter between 11.25 and 11.48 phi, or 0.00035 and 0.000411 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   12.02phi_0.000241mm

   Weight percent of sample with grain diameter between 11.48 and 12.02 phi, or 0.000241 and 0.00035 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   13.02phi_0.00012mm

   Weight percent of sample with grain diameter between 12.02 and 13.02 phi, or 0.00012 and 0.000241 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Percent_Gravel

   percent of sample greater than 2 mm (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Percent_Sand

   percent of sample less than 2 mm and greater than 63 microns (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Percent_Silt

   percent of sample less than 63 microns and greater than 4 microns (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Percent_Clay

   percent of sample less than 4 microns (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Percent_Mud

   percent of sample less than 63 microns (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	100
   Units:	percentage

   Gravel_to_Sand_ratio

   ratio of percent gravel in sample to percent sand (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	5.408
   Units:	dimensionless

   Sand_to_Silt_ratio

   ratio of percent sand in sample to percent silt (Source: producer defined)

   Range of values
   Minimum:	1.195
   Maximum:	227.955
   Units:	dimensionless

   Silt_to_Clay_ratio

   ratio of percent silt in sample to percent clay (Source: producer defined)

   Range of values
   Minimum:	0.904
   Maximum:	16.953
   Units:	dimensionless

   Sand_to_Clay_ratio

   ratio of percent sand in sample to percent clay (Source: producer defined)

   Range of values
   Minimum:	5.597
   Maximum:	2288.061
   Units:	dimensionless

   Sand_to_Mud_ratio

   ratio of percent sand in sample to percent mud (Source: producer defined)

   Range of values
   Minimum:	1.004
   Maximum:	207.302
   Units:	dimensionless

   Gravel_to_Mud_ratio

   ratio of percent gravel in sample to percent mud (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	119.726
   Units:	dimensionless

   D5_percent_coarser_basis_in_phi

   Phi size at D5 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	-4.000
   Maximum:	2.559
   Units:	Phi size

   D10_percent_coarser_basis_in_phi

   Phi size at D10 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	-4.000
   Maximum:	2.810
   Units:	Phi size

   D16_percent_coarser_basis_in_phi

   Phi size at D16 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	-4.000
   Maximum:	3.026
   Units:	Phi size

   D25_percent_coarser_basis_in_phi

   Phi size at D25 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	-4.000
   Maximum:	3.291
   Units:	Phi size

   D50_percent_coarser_basis_in_phi

   Phi size at D50 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	-4.000
   Maximum:	3.997
   Units:	Phi size

   D75_percent_coarser_basis_in_phi

   Phi size at D75 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	-1.673
   Maximum:	5.208
   Units:	Phi size

   D84_percent_coarser_basis_in_phi

   Phi size at D84 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	-0.659
   Maximum:	6.661
   Units:	Phi size

   D90_percent_coarser_basis_in_phi

   Phi size at D90 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	-0.233
   Maximum:	8.251
   Units:	Phi size

   D95_percent_coarser_basis_in_phi

   Phi size at D95 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	-0.032
   Maximum:	9.543
   Units:	Phi size

   D95_percent_coarser_basis_in_mm

   mm size at D95 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	0.0013
   Maximum:	1.0227
   Units:	millimeters

   D90_percent_coarser_basis_in_mm

   mm size at D90 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	0.0033
   Maximum:	1.1753
   Units:	millimeters

   D84_percent_coarser_basis_in_mm

   mm size at D84 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	0.0099
   Maximum:	1.5793
   Units:	millimeters

   D75_percent_coarser_basis_in_mm

   mm size at D75 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	0.0270
   Maximum:	3.1881
   Units:	millimeters

   D50_percent_coarser_basis_in_mm

   mm size at D50 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	0.0626
   Maximum:	16.0000
   Units:	millimeters

   D25_percent_coarser_basis_in_mm

   mm size at D25 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	0.1022
   Maximum:	16.0000
   Units:	millimeters

   D16_percent_coarser_basis_in_mm

   mm size at D16 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	0.1228
   Maximum:	16.0000
   Units:	millimeters

   D10_percent_coarser_basis_in_mm

   mm size at D10 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	0.1426
   Maximum:	16.0000
   Units:	millimeters

   D5_percent_coarser_basis_in_mm

   mm size at D5 on a percent coarser basis (Source: producer defined)

   Range of values
   Minimum:	0.1697
   Maximum:	16.0000
   Units:	millimeters

   Folk_Ward_Median_percent_coarser_basis

   median for sample by Folk and Ward (1957) method (Source: producer defined)

   Range of values
   Minimum:	-4.000000
   Maximum:	3.997017
   Units:	Phi size

   Folk_Ward_Mean_percent_coarser_basis

   mean for sample by Folk and Ward (1957) method (Source: producer defined)

   Range of values
   Minimum:	-2.859930
   Maximum:	4.428883
   Units:	Phi size

   Folk_Ward_Sorting_percent_coarser_basis

   sorting for sample by Folk and Ward (1957) method (Source: producer defined)

   Range of values
   Minimum:	0.302212
   Maximum:	3.758149
   Units:	Phi size

   Folk_Ward_Skewness_percent_coarser_basis

   skewness for sample by Folk and Ward (1957) method (Source: producer defined)

   Range of values
   Minimum:	-0.310310
   Maximum:	1.481265
   Units:	Phi size

   Folk_Ward_Kurtosis_percent_coarser_basis

   kurtosis for sample by Folk and Ward (1957) method (Source: producer defined)

   Range of values
   Minimum:	0.415391
   Maximum:	3.933949
   Units:	Phi size

   Inman_Median_percent_coarser_basis

   median for sample by Inman (1952) method (Source: producer defined)

   Range of values
   Minimum:	-4.000000
   Maximum:	3.997017
   Units:	Phi size

   Inman_Mean_percent_coarser_basis

   mean for sample by Inman (1952) method (Source: producer defined)

   Range of values
   Minimum:	-2.294713
   Maximum:	4.644817
   Units:	Phi size

   Inman_Sorting_percent_coarser_basis

   sorting for sample by Inman (1952) method (Source: producer defined)

   Range of values
   Minimum:	0.237718
   Maximum:	4.064790
   Units:	Phi size

   Inman_Skew_16_84_percent_coarser_basis

   skewness for sample (D16-D84) by Inman (1952) method (Source: producer defined)

   Range of values
   Minimum:	-0.525911
   Maximum:	1.581107
   Units:	Phi size

   Inman_Skew_05_95_percent_coarser_basis

   skewness for sample (D05-D95) by Inman (1952) method (Source: producer defined)

   Range of values
   Minimum:	-0.363275
   Maximum:	3.833196
   Units:	Phi size

   Inman_Kurtosis_percent_coarser_basis

   kurtosis for sample by Inman (1952) method (Source: producer defined)

   Range of values
   Minimum:	-0.098593
   Maximum:	4.069246
   Units:	Phi size

   Trask_Median_percent_coarser_basis

   median for sample by Trask (1930) method (Source: producer defined)

   Range of values
   Minimum:	0.062629
   Maximum:	16.000000
   Units:	millimeters

   Trask_Mean_percent_coarser_basis

   mean for sample by Trask (1930) method (Source: producer defined)

   Range of values
   Minimum:	0.064603
   Maximum:	9.594030
   Units:	millimeters

   Trask_Sorting_percent_coarser_basis

   sorting for sample by Trask (1930) method (Source: producer defined)

   Range of values
   Minimum:	1.129966
   Maximum:	10.012454
   Units:	millimeters

   Trask_Skewness_percent_coarser_basis

   skewness for sample by Trask (1930) method (Source: producer defined)

   Range of values
   Minimum:	0.064952
   Maximum:	24.090525
   Units:	millimeters

   Trask_Kurtosis_percent_coarser_basis

   kurtosis for sample by Trask (1930) method (Source: producer defined)

   Range of values
   Minimum:	0.018911
   Maximum:	1.255984
   Units:	millimeters

   1_Moment_Mean_Phi

   First Moment measure (Source: producer defined)

   Range of values
   Minimum:	-2.753849
   Maximum:	4.568478
   Units:	Phi size

   1_Moment_Mean_mm

   First Moment measure (Source: producer defined)

   Range of values
   Minimum:	0.042145
   Maximum:	6.745143
   Units:	millimeters

   2_Moment_Variance

   Second Moment measure (Source: producer defined)

   Range of values
   Minimum:	0.387541
   Maximum:	15.070548
   Units:	phi

   2_Moment_Standard_Deviation

   Second Moment measure (Source: producer defined)

   Range of values
   Minimum:	0.622528
   Maximum:	3.882080
   Units:	Phi size

   3_Moment_Skewness

   Third Moment measure (Source: producer defined)

   Range of values
   Minimum:	0.084266
   Maximum:	6.180729
   Units:	dimensionless

   4_Moment_Kurtosis

   Fourth Moment measure (Source: producer defined)

   Range of values
   Minimum:	2.497511
   Maximum:	64.017637
   Units:	dimensionless

   Entity_and_Attribute_Overview: The first line of the .csv file is a header line.
   Entity_and_Attribute_Detail_Citation: U.S. Geological Survey
   

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Helen W. Dow
2. Who also contributed to the data set?
   USGS gratefully acknowledges sampling permission granted by California State Parks.
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?

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: 2022 (process 1 of 3)

   SAMPLE COLLECTION: Samples were collected using a hand-operated trowel to collect sediment in the upper 10 cm of fluvial deposits.

   Date: 2022 (process 2 of 3)

   GRAIN-SIZE ANALYSIS: Grain-size analysis was conducted by the USGS Pacific Coastal and Marine Science Center (PCMSC) sediment lab using a Beckman Coulter LS 13 320 particle size analyzer with an aqueous liquid module attachment. PCMSC procedures are modified from those described in Carver (1971) and Folk (1974, 1980). 5-50 grams of sediment was sub-sampled and at least 10 milliliters of 30 percent hydrogen peroxide was added to oxidize overnight to remove organics. The samples were then heated to 250 degrees Celsius to drive off excess hydrogen peroxide. Next, samples were placed in an ultrasonic bath to help disperse silt and clay (mud) from sand and larger-sized particles. Samples were then rinsed twice in deionized water with centrifugation to remove soluble ions. Subsequently, the samples were wet sieved with 1 millimeter and 0.063 millimeter sieves to segregate the combined gravel and coarse sand fraction (greater than 1 millimeter), sand (1 millimeter to 0.063 millimeter), and mud (less than 0.063 millimeter). The coarse sand + gravel fractions were then dried, dry sieved at 1/4phi intervals and weighed (Carver, 1971). The sand fraction was dried and weighed. The mud fraction was collected in a 1 liter graduated cylinder, 5 milliliters of at least 10 percent sodium hexametaphosphate (dispersant) was added, and deionized water was added to bring the total the volume to 1 liter. The mud + dispersant solution sat overnight to ensure complete dispersion and to observe if flocculation occurred. Subsequently, a 20 milliliter aliquot was extracted from the graduated cylinder and dried to obtain the mud fraction weight normalized to a 1-liter basis. The mud and sand fractions were analyzed separately via the Beckman Coulter LS 13 320 with the aqueous liquid module attachment. All size fraction data were compiled and converted by the PCMSC sediment lab pcSDSZ program (Penscil, 2015) to a grain-size distribution at 1/4phi size intervals on a weight percent basis. pcSDSZ also calculated interpolated sizes and graphical statistics on a percent coarser basis (Folk and Ward, 1957; Folk, 1966; Folk, 1974, 1980; Inman, 1952; Trask, 1930, 1932) and moment measures (Collias and others, 1963; Jaquet and Vernet, 1976; Folk 1980). Person who carried out this activity:
   

   Angela Tan

   USGS

   Physical Scientist

   2885 Mission Street

   Santa Cruz, CA
   

   831-460-7409 (voice)

   atan@usgs.gov

   Date: 2022 (process 3 of 3)

   INTERPOLATED SIZES: Grain sizes at select cumulative percentage values (D) were calculated by the PCMSC Sediment Lab software pcSDSZ version 1.71 on a percent coarser basis, which summed from coarse to fine bins. D values were interpolated between phi bins bracketing the specified D value. Grain sizes were converted into units of millimeters (mm) using the formula mm=reciprocal of 2(exponent)phi or (phi=-log2(mm)). Interpolated grain sizes at D5, D10, D16, D25, D50, D75, D84, D90, and D95 are reported in phi and millimeter units. Person who carried out this activity:
   

   Angela Tan

   USGS

   Physical Scientist

   2885 Mission Street

   Santa Cruz, CA
   

   831-460-7409 (voice)

   atan@usgs.gov

3. What similar or related data should the user be aware of?
   Beckman-Coulter, 2011, Instructions for Use: LS 13 320 Laser Diffraction Particle Size Analyzer.

   Online Links:

   • https://www.beckmancoulter.com/wsrportal/techdocs?docname=b05577ab.pdf

   Other_Citation_Details:

   Beckman-Coulter, 2011, Instructions for Use: LS 13 320 Laser Diffraction Particle Size Analyzer: Brea, Calif., Beckman-Coulter, 246 p.

   Carver, Robert E., 1971, Procedures in Sedimentary Petrology.

   Online Links:

   • https://tamug-ir.tdl.org/handle/1969.3/21450

   Other_Citation_Details:

   Carver, R.E., 1971, Procedures in Sedimentary Petrology: Wiley Interscience, New York: 49-94.

   Collias, E. E., Rona, M. R., McManus, D. A., and Creager, J. S., 1963, Machine Processing of Geological Data.

   Online Links:

   • https://apps.dtic.mil/sti/pdfs/AD0423746.pdf

   Other_Citation_Details:

   Collias, E.E., Rona, M.R., McManus, D.A., and Creager, J.S., 1963, Machine processing of geological data: Department of Oceanography, University of Washington, Technical Report No. 87, 119 p.

   Folk, Robert Louis, 1974, Petrology of Sedimentary Rocks.

   Online Links:

   • https://tamug-ir.tdl.org/handle/1969.3/21435

   Other_Citation_Details:

   Folk, R.L., 1974, Petrology of Sedimentary Rocks: Hemphill Publishing Co., Austin, TX, 182 p.

   Folk, Robert Louis, 1980, Petrology of Sedimentary Rocks.

   Online Links:

   • https://repositories.lib.utexas.edu/bitstream/handle/2152/22930/folkpetrology.pdf?sequence=3

   Other_Citation_Details:

   Folk, R.L., 1980, Petrology of Sedimentary Rocks: Hemphill Publishing Co., Austin, TX, 184 p.

   Folk, Robert Louis, 1966, A review of grain-size parameters.

   Online Links:

   • https://doi.org/10.1111/j.1365-3091.1966.tb01572.x

   Other_Citation_Details:

   Folk, R.L.,1966, A review of grain-size parameters: Sedimentology, 6, 73-93.

   Folk, Robert Louis, and Ward, William C., 1957, Brazos River bar; a study in the significance of grain size parameters.

   Online Links:

   • https://doi.org/10.1306/74D70646-2B21-11D7-8648000102C1865D

   Other_Citation_Details:

   Folk, R.L., and Ward, W.C., 1957, Brazos River bar; a study in the significance of grain size parameters: Journal of Sedimentary Research, 27, 3-26.

   Inman, Douglas Lamar, 1952, Measures for describing the size distribution of sediments.

   Online Links:

   • https://doi.org/10.1306/D42694DB-2B26-11D7-8648000102C1865D

   Other_Citation_Details:

   Inman, D.L., 1952, Measures for describing the size distribution of sediments: Journal of Sedimentary Research, 22, 125-145.

   Jaquet, J.M., and Vernet, J.P., 1976, Moment and graphic size parameters in sediments of Lake Geneva (Switzerland).

   Online Links:

   • https://doi.org/10.1306/212F6F46-2B24-11D7-8648000102C1865D

   Other_Citation_Details:

   Jaquet J.M., and Vernet J.P., 1976, Moment and graphic size parameters in sediments of Lake Geneva (Switzerland): Journal of Sedimentary Petrology, 46, 305-312.

   Inc., Penscil, 2015, pcSDSZ: Sediment Size Analysis Software for Windows Operation Manual Version 2.00, prepared for USGS Coastal and Marine Geology.

   Other_Citation_Details:

   Penscil Inc., 2015, pcSDSZ: Sediment Size Analysis Software for Windows Operation Manual Version 2.00, prepared for USGS Coastal and Marine Geology. Unpublished document.

   Trask, Parker D., 1930, Mechanical analyses of sediments by centrifuge.

   Online Links:

   • https://doi.org/10.2113/gsecongeo.25.6.581

   Other_Citation_Details:

   Trask, P.D., 1930, Mechanical analyses of sediments by centrifuge: Economic Geology, 25, p. 581-599.

   Trask, Parker D., 1932, Origin and environment of source sediments of petroleum.

   Online Links:

   • https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/abs/origin-and-environment-of-source-sediments-of-petroleum-by-d-trask-parker-assisted-by-harold-e-hammar-and-c-c-wu-gulf-publishing-co-houston-texas-323-pp-1932/E4212BACC9A798808CC166A1DE4CF691#article

   Other_Citation_Details:

   Trask, P. D., 1932, Origin and environment of source sediments of petroleum: Gulf Publishing Company, Houston, Texas. 323 p.

   Inc., UIC, 2022, Operation Manual Model CM5017 CO2 Coulometer.

   Other_Citation_Details:

   UIC Inc., Operation Manual Model CM5017 CO2 Coulometer, Joliet, IL, 2.0, 28-30.

   Inc., UIC, 2022, Operation Manual Model CM5200 Autosampler Furnace.

   Other_Citation_Details:

   UIC Inc., Operation Manual Model CM5200 Autosampler Furnace, Joliet, IL, 2.4, 13 p.

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

1. How well have the observations been checked?
   For grain-size analyses, annual service tests and daily calibrations with reference standards ensured that the Beckman Coulter LS 13 320 operated within specifications (Beckman-Coulter, 2011). Each sample was analyzed three times by the instrument and the data were averaged. In addition, a lab procedural duplicate was run with each batch of samples to ensure consistency and values were within 15 percent. For total carbon and total inorganic carbon analyses, duplicates were run for each sample and the results were averaged. PCMSC ensured that the instrument was within specifications by running blanks and pure, reagent-grade calcium carbonate standard before and after every 10 samples. A lab procedural duplicate was run with each batch of samples to ensure consistency and values were within 15 percent.
2. How accurate are the geographic locations?
   A formal accuracy assessment of the horizontal positional information in the data set has not been conducted.
3. How accurate are the heights or depths?
   
4. Where are the gaps in the data? What is missing?
   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.
5. How consistent are the relationships among the observations, including topology?
   Data values are within the expected value range.

How can someone get a copy of the data set?

1. Who distributes the data set? (Distributor 1 of 1)
   
   U.S. Geological Survey - ScienceBase

   Denver Federal Center, Building 810, Mail Stop 302

   Denver, CO
   

   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 (California_river_grainsize.csv), which also includes CSDGM FGDCcompliant 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?
   • Availability in digital form:

     Data format:	California_river_grainsize.csv in format comma-delimited text (version Microsoft Excel for Microsoft 365 MSO (Version 2302)) Size: 0.0889
     Network links:	https://www.sciencebase.gov/catalog/file/get/6532dd2fd34ee4b6e05bb128 https://doi.org/10.5066/P99V17HO

   • Cost to order the data: None.

5. What hardware or software do I need in order to use the data set?
   These data can be viewed with any text-reading or spreadsheet software.

Who wrote the metadata?

Dates:

Last modified: 03-Jan-2024

Metadata author:

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

Metadata standard:

Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)