Grain-size data for sediment samples collected in Whiskeytown Lake, northern California, in 2018 and 2019

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What does this data set describe?

Title:

Grain-size data for sediment samples collected in Whiskeytown Lake, northern California, in 2018 and 2019

Abstract:

This data release includes grain-size data from sediment samples collected in submerged and subaerial regions in Whiskeytown Lake and around the reservoir margin. Sediment samples were collected using a sampler deployed from a boat or by hand from locations exposed above the water surface. Sediment grain size was analyzed at the USGS laboratory in Santa Cruz, Calif. The full data set is reported here, but users should be aware that due to instrument error the data between approximately grain sizes from 0.040 to 0.063 mm may be incorrect and have unknown degrees of uncertainty. Proportions of gravel, sand, silt, and ratios among these size fractions, are considered accurate.

Supplemental_Information:

Additional information about the field activities from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2018-686-FA
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Sediment samples from Whiskeytown Lake (within Whiskeytown National Recreation Area) were collected under a Scientific Research and Collection Permit issued by the National Park Service, permit number WHIS-00139.

How might this data set be cited?
East, Amy E., and Dartnell, Peter, 20230901, Grain-size data for sediment samples collected in Whiskeytown Lake, northern California, in 2018 and 2019: data release DOI:10.5066/P9TUTK7J, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.
Online Links:
- https://doi.org/10.5066/P9TUTK7J
What geographic area does the data set cover?
West_Bounding_Coordinate: -122.60499716
East_Bounding_Coordinate: -122.51648694
North_Bounding_Coordinate: 40.65396202
South_Bounding_Coordinate: 40.59500793
What does it look like?

https://www.sciencebase.gov/catalog/file/get/ 64a31377d34ef77fcb057059?name=Whiskeytown_Grainsize_map.jpg&allowOpen=true (JPEG)
Map showing location of samples collected for grain-size analysis.
Does the data set describe conditions during a particular time period?

Beginning_Date: 13-Dec-2018

Ending_Date: 15-May-2019

Currentness_Reference:

End of sample collection.
What is the general form of this data set?
Geospatial_Data_Presentation_Form: comma-delimited text
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 (56)
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 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is 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.

How does the data set describe geographic features?

Attribute table

Table containing attribute information associated with the dataset. NA indicates that a sediment sample was not analyzed for that grain size, or that the data field was not used, or that no value was calculated. (Source: Producer defined)

FAN ID

Unique U.S. Geological Survey field activity identifier (Source: producer defined) Unique identifier for the U.S. Geological Survey field activity

Sample ID

Name of sample (Source: producer defined) Unique identifier for the sample given in the field

Lab ID

Laboratory identification number (Source: Producer defined) Unique identifier for the sample given during analysis in the lab

Date Collected

Date of sample collection in yyyy-mm-dd format (Source: producer defined)

Range of values
Minimum:	2018-12-13
Maximum:	2019-05-15
Units:	Dates in yyyy-mm-dd format

Sample Recorded

Additional information noted about whether the sample was recorded. (Source: producer defined) free text section

Time (PDT)

Time the sample was collected, in Pacific Daylight Time (PDT). NA indicates no time was noted. (Source: producer defined)

Range of values
Minimum:	NA
Maximum:	NA
Units:	Time in HH:MM:SS

Description

Additional information noted about a sample. NA indicates no additional information was noted. (Source: producer defined) free text section

Latitude

Latitude of sample in decimal degrees (Source: producer defined)

Range of values
Minimum:	40.618647
Maximum:	40.650496
Units:	decimal degrees

Longitude

Longitude of sample in decimal degrees (Source: producer defined)

Range of values
Minimum:	-122.589960
Maximum:	-122.545234
Units:	decimal degrees

Sample Type

Type of sample collected (Source: Producer defined)

Value	Definition
Surface grab sample	Sample collected by hand from the land surface or by Van Veen grab sampler from boat (R/V San Lorenzo).

Processing notes

Notes associated with sample or processing. NA indicates no additional information was noted. (Source: Producer defined)

Value	Definition
insufficient sand fraction for analysis or used entire sample	Sample contained insufficient sand for analysis
insufficient sand fraction to coulter	Sample contained insufficient sand to run through the Coulter analyzer
used entire sample	The entire sample was used for processing the first time. Replicate analyses could not be performed to correct for inaccurate analyses. See Attribute Accuracy section of metadata for further explanation.

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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

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

Wt. percent in 4.00 phi bin or 0.0625 mm bin, approximate

Weight percent of sample with grain diameter between 3.75 and 4.00 phi, or 0.0625 and 0.07433 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 4.25 phi bin or 0.052556 mm bin, approximate

Weight percent of sample with grain diameter between 4.00 and 4.25 phi, or 0.052556 and 0.0625 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 4.50 phi bin or 0.044194 mm bin, approximate

Weight percent of sample with grain diameter between 4.25 and 4.50 phi, or 0.044194 and 0.052556 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 4.75 phi bin or 0.037163 mm bin, approximate

Weight percent of sample with grain diameter between 4.50 and 4.75 phi, or 0.037163 and 0.044194 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 5.00 phi bin or 0.03125 mm bin, approximate

Weight percent of sample with grain diameter between 4.75 and 5.00 phi, or 0.03125 and 0.037163 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 5.25 phi bin or 0.02628 mm bin, approximate

Weight percent of sample with grain diameter between 5.00 and 5.25 phi, or 0.02628 and 0.03125 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 5.50 phi bin or 0.0221 mm bin, approximate

Weight percent of sample with grain diameter between 5.25 and 5.50 phi, or 0.0221 and 0.02628 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 5.75 phi bin or 0.01858 mm bin, approximate

Weight percent of sample with grain diameter between 5.50 and 5.75 phi, or 0.01858 and 0.0221 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 6.00 phi bin or 0.01563 mm bin, approximate

Weight percent of sample with grain diameter between 5.75 and 6.00 phi, or 0.01563 and 0.01858 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 6.25 phi bin or 0.01314 mm bin, approximate

Weight percent of sample with grain diameter between 6.00 and 6.25 phi, or 0.01314 and 0.01563 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 6.50 phi bin or 0.01105 mm bin, approximate

Weight percent of sample with grain diameter between 6.25 and 6.50 phi, or 0.01105 and 0.01314 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 6.75 phi bin or 0.00929 mm bin, approximate

Weight percent of sample with grain diameter between 6.50 and 6.75 phi, or 0.00929 and 0.01105 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 7.00 phi bin or 0.00781 mm bin, approximate

Weight percent of sample with grain diameter between 6.75 and 7.00 phi, or 0.00781 and 0.00929 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 7.25 phi bin or 0.00657 mm bin, approximate

Weight percent of sample with grain diameter between 7.00 and 7.25 phi, or 0.00657 and 0.00781 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 7.50 phi bin or 0.00552 mm bin, approximate

Weight percent of sample with grain diameter between 7.25 and 7.50 phi, or 0.00552 and 0.00657 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 7.75 phi bin or 0.00465 mm bin, approximate

Weight percent of sample with grain diameter between 7.50 and 7.75 phi, or 0.00465 and 0.00552 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

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

Wt. percent in 8.00 phi bin or 0.00391 mm bin, approximate

Weight percent of sample with grain diameter between 7.75 and 8.00 phi, or 0.00391 and 0.00465 mm. Values may have been affected by lab equipment malfunction; see section Attribute_Accuracy_Report. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

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

Wt. percent in 9.99 phi bin or 0.00098 mm bin

Weight percent of sample with grain diameter between 9.75 and 9.99 phi, or 0.00098 and 0.00116 mm. (Source: producer defined)

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

Wt. percent in 10.25 phi bin or 0.00082 mm bin

Weight percent of sample with grain diameter between 9.99 and 10.25 phi, or 0.00082 and 0.00098 mm. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	100
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. (Source: producer defined)

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

Wt. percent in 10.99 phi bin or 0.00049 mm bin

Weight percent of sample with grain diameter between 10.75 and 10.99 phi, or 0.00049 and 0.00058 mm. (Source: producer defined)

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

Wt. percent in 11.25 phi bin or 0.0004 mm bin

Weight percent of sample with grain diameter between 10.99 and 11.25 phi, or 0.0004 and 0.00049 mm. (Source: producer defined)

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

Wt. percent in 11.48 phi bin or 0.00035 mm bin

Weight percent of sample with grain diameter between 11.25 and 11.48 phi, or 0.00035 and 0.0004 mm. (Source: producer defined)

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

Wt. percent in 12.02 phi bin or 0.000241 mm bin

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

Wt. percent in 13.02 phi bin or 0.00012 mm bin

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. NA indicates there was insufficient gravel or sand to compute the ratio. (Source: producer defined)

Range of values
Minimum:	0
Maximum:	12.308
Units:	no unit

Sand to Silt Ratio

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

Range of values
Minimum:	0
Maximum:	17.574
Units:	no unit

Silt to Clay Ratio

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

Range of values
Minimum:	0.901
Maximum:	11.844
Units:	no unit

Sand to Clay Ratio

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

Range of values
Minimum:	0
Maximum:	141.859
Units:	no unit

Sand to Mud Ratio

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

Range of values
Minimum:	0
Maximum:	15.636
Units:	no unit

Gravel to Mud Ratio

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

Range of values
Minimum:	0
Maximum:	115.465
Units:	no unit

D5 Phi

Phi size at D5 for sample. (Source: producer defined)

Range of values
Minimum:	-4
Maximum:	6.455
Units:	Phi size

D10 Phi

Phi size at D10 for sample. (Source: producer defined)

Range of values
Minimum:	-4
Maximum:	6.602
Units:	Phi size

D16 Phi

Phi size at D16 for sample. (Source: producer defined)

Range of values
Minimum:	-4
Maximum:	6.817
Units:	Phi size

D25 Phi

Phi size at D25 for sample. (Source: producer defined)

Range of values
Minimum:	-4
Maximum:	7.172
Units:	Phi size

D50 Phi

Phi size at D50 for sample. (Source: producer defined)

Range of values
Minimum:	-4
Maximum:	8.101
Units:	Phi size

D75 Phi

Phi size at D75 for sample. (Source: producer defined)

Range of values
Minimum:	-4
Maximum:	9.217
Units:	Phi size

D84 Phi

Phi size at D84 for sample. (Source: producer defined)

Range of values
Minimum:	-4
Maximum:	9.73
Units:	Phi size

D90 Phi

Phi size at D90 for sample. (Source: producer defined)

Range of values
Minimum:	-1.66
Maximum:	10.127
Units:	Phi size

D95 Phi

Phi size at D95 for sample. (Source: producer defined)

Range of values
Minimum:	0.969
Maximum:	10.529
Units:	Phi size

D95 mm

mm size at D5 for sample. (Source: producer defined)

Range of values
Minimum:	0.0007
Maximum:	0.5108
Units:	millimeters

D90 mm

mm size at D10 for sample. (Source: producer defined)

Range of values
Minimum:	0.0009
Maximum:	3.1598
Units:	millimeters

D84 mm

mm size at D16 for sample. (Source: producer defined)

Range of values
Minimum:	0.0012
Maximum:	16
Units:	millimeters

D75 mm

mm size at D25 for sample. (Source: producer defined)

Range of values
Minimum:	0.0017
Maximum:	16
Units:	millimeters

D50 mm

mm size at D50 for sample. (Source: producer defined)

Range of values
Minimum:	0.0036
Maximum:	16
Units:	millimeters

D25 mm

mm size at D75 for sample. (Source: producer defined)

Range of values
Minimum:	0.0069
Maximum:	16
Units:	millimeters

D16 mm

mm size at D84 for sample. (Source: producer defined)

Range of values
Minimum:	0.0089
Maximum:	16
Units:	millimeters

D10 mm

mm size at D90 for sample. (Source: producer defined)

Range of values
Minimum:	0.0103
Maximum:	16
Units:	millimeters

D5 mm

mm size at D95 for sample. (Source: producer defined)

Range of values
Minimum:	0.0114
Maximum:	16
Units:	millimeters

F-W Median Phi

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

Range of values
Minimum:	-4
Maximum:	8.101378
Units:	Phi size

F-W Mean Phi

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

Range of values
Minimum:	-4
Maximum:	8.216092
Units:	Phi size

F-W Sorting Phi

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

Range of values
Minimum:	0.752923
Maximum:	3.072098
Units:	Phi size

F-W Skewness Phi

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

Range of values
Minimum:	-0.271127
Maximum:	0.5
Units:	Phi size

F-W Kurtosis Phi

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

Range of values
Minimum:	0
Maximum:	1.474163
Units:	Phi size

Inman Median Phi

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

Range of values
Minimum:	-4
Maximum:	8.101378
Units:	Phi size

Inman Mean Phi

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

Range of values
Minimum:	-4
Maximum:	8.273449
Units:	Phi size

Inman Sorting Phi

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

Range of values
Minimum:	0.
Maximum:	3.13833
Units:	Phi size

Inman Skew 16-84 Phi

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

Range of values
Minimum:	-0.337395
Maximum:	0.505835
Units:	Phi size

Inman Skew 05-95 Phi

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

Range of values
Minimum:	-0.736325
Maximum:	0.928505
Units:	Phi size

Inman Kurtosis Phi

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

Range of values
Minimum:	0
Maximum:	1.560648
Units:	Phi size

Trask Median mm

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

Range of values
Minimum:	0.003641
Maximum:	16
Units:	millimeters

Trask Mean mm

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

Range of values
Minimum:	0.004308
Maximum:	16
Units:	millimeters

Trask Sorting mm

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

Range of values
Minimum:	1
Maximum:	5.816288
Units:	millimeters

Trask Skewness mm

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

Range of values
Minimum:	0.562091
Maximum:	4.966509
Units:	millimeters

Trask Kurtosis mm

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

Range of values
Minimum:	0
Maximum:	0.355236
Units:	millimeters

Mean Phi

phi size mean for sample. (Source: producer defined)

Range of values
Minimum:	-3.421769
Maximum:	8.232986
Units:	Phi size

Mean mm

mm size mean for sample. (Source: producer defined)

Range of values
Minimum:	0.003324
Maximum:	10.716556
Units:	millimeters

Variance Phi

variance for sample. (Source: producer defined)

Range of values
Minimum:	1.653984
Maximum:	8.427472
Units:	Phi size

Std. Dev. Phi

standard deviation for sample. (Source: producer defined)

Range of values
Minimum:	1.286073
Maximum:	2.903011
Units:	Phi size

Skewness Phi

skewness for sample. (Source: producer defined)

Range of values
Minimum:	-1.763571
Maximum:	3.523449
Units:	Phi size

Kurtosis Phi

kurtosis for sample. (Source: producer defined)

Range of values
Minimum:	1.876756
Maximum:	16.953721
Units:	Phi size

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?

Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
- Amy E. East
- Peter Dartnell
Who also contributed to the data set?
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

831-460-7401 (voice)

pcmsc_data@usgs.gov

Why was the data set created?

The Carr Fire ignited in northern California in July 2018, and ultimately burned almost 300,000 acres (approximately half on Federal lands), resulting in a federal major-disaster declaration (DR-4382). Approximately 93 percent of the area within Whiskeytown National Recreation Area was burned extensively during the Carr Fire, including all of the landscape surrounding and draining into Whiskeytown Lake. Whiskeytown Lake, a federally managed reservoir, subsequently acted as a sediment trap for material eroded from hillslopes and streambeds in the aftermath of the Carr Fire. The U.S. Geological Survey measured topographic change associated with sediment deposition and erosion in and around Whiskeytown Lake after the Carr Fire, in order to support calculations of post-fire sediment yield from the surrounding landscape. Data collection and analysis have been supported by funds through H.R. 2157, the Additional Supplemental Appropriations for Disaster Relief Act of 2019.

How was the data set created?

From what previous works were the data drawn?
How were the data generated, processed, and modified?

Date: 2019 (process 1 of 2)
Sediment grain size was analyzed at the USGS laboratory in Santa Cruz, Calif. Particles coarser than 2 mm were sieved using a RO-TAP sieve shaker, and particles finer than 2 mm were analyzed with a Coulter laser particle-size analyzer (LPSA), after organic matter had been removed using a hydrogen peroxide solution. Several months after the samples were analyzed, a problem was discovered with the LPSA that had caused inaccurate measurement of the coarse silt content (sizes approximately 0.040 to 0.063 mm). Grain-size distribution of particles coarser than 0.063 mm was unaffected, and the proportions of silt (0.040 to 0.063 mm) and clay (finer than 0.004 mm) also were measured accurately. The full data set is reported here, but users should be aware that due to this instrument error the data between grain sizes 0.040 and 0.063 mm may be over-estimated and have uncertainty of approximately 20%. Person who carried out this activity:

Angela Tan

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Sediment Laboratory Manager

2885 Mission Street
Santa Cruz, CA

831-460-4747 (voice)

atan@usgs.gov

Date: 27-Jun-2023 (process 2 of 2)
INTERPOLATED SIZES WITH COLUMN HEADING CORRECTION: Grain sizes at select cumulative percentage values (D) were calculated by the PCMSC Sediment Lab software pcSDSZ version 2.00 using a polynomial interpolation 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. Grain sizes at D5, D10, D16, D25, D50, D75. D84, D90, and D95 are reported in phi and millimeter units. PCMSC Sediment Lab data reports issued between February 2011 and August 2022 were revised so that the column headers for the Interpolated Sizes in millimeter units (mm) were transposed from increasing to decreasing D values to correctly reflect the columns of data. This revised metadata shows the column heading correction, which also appears in the corresponding revised data table. Person who carried out this activity:

Angela Tan

U.S. Geological Survey, SOUTHWEST REGION

Physical Scientist

2885 Mission Street
Santa Cruz, CA

US

831-460-7409 (voice)

831-427-4748 (FAX)

atan@usgs.gov
What similar or related data should the user be aware of?
Dartnell, Peter, 2021, Chirp sub-bottom data collected in 2019 in Whiskeytown Lake, California during USGS field activity 2018-686-FA.
Online Links:
- https://doi.org/10.5066/P958Q0DX
Other_Citation_Details:
Dartnell, P., Brothers, D.S., East, A.E., Currie, J., Dal Ferro, P., and Logan, J.B., 2021, Chirp sub-bottom data collected in 2019 in Whiskeytown Lake, California during USGS field activity 2018-686-FA: U.S. Geological Survey data release.
Logan, Joshua B., 2020, Bathymetry, topography and orthomosaic imagery for Whiskeytown Lake, northern California.
Online Links:
- https://doi.org/10.5066/P9HEDYNT
Other_Citation_Details:
Logan, J.B., Dartnell, P., East, A.E., and Ritchie, A.C., 2020, Bathymetry, topography and orthomosaic imagery for Whiskeytown Lake, northern California: U.S. Geological Survey data release.
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, v. 27, n. 1, p. 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, v. 22, n. 3, p. 125-145.
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, v. 26, n. 6, p. 581-599.

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

How well have the observations been checked?
Several months after the samples were analyzed, a problem was discovered with the LPSA that had caused inaccurate measurement of the coarse silt content (sizes approximately from 0.040 to 0.063 mm). Grain-size distribution of particles coarser than 0.063 mm is thought to have been unaffected, and the proportions of silt (0.040 to 0.063 mm) and clay (finer than 0.004 mm) also were thought to have been measured accurately. The full data set is reported here, but users should be aware that due to this instrument error the data between approximately grain sizes from 0.040 to 0.063 mm may be over-estimated and have unknown degrees of uncertainty. Proportions of gravel, sand, silt, and ratios among these size fractions, are considered accurate.
How accurate are the geographic locations?
Horizontal positional accuracy is estimated to be that of the navigation system on the R/V San Lorenzo, the vessel from which samples were collected. On this vessel, the Applanix POS-MV post-processed horizontal positional accuracy is about 0.1 m with roll and pitch accuracies of about 0.02 degrees (https://www.applanix.com/downloads/products/specs/posmv/POS-MV-WaveMaster-II.pdf). The SWATHPlus sonar system has an across-track resolution of about 5 cm (http://www.bathyswath.com/sites/default/files/documents/ETD_2002_Bathyswath%20information_EN.pdf). Accuracies of final products may be lower due to total propagated uncertainties of the mapping systems, which include sonar system, position and motion compensation system, and navigation, as well as data processing that includes sounding cleaning, gridding, and datum transformations.
How accurate are the heights or depths?
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.
How consistent are the relationships among the observations, including topology?
No formal logical accuracy tests were conducted. 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 as the originator(s) of the dataset and in products derived from these data.

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
What's the catalog number I need to order this data set? These data are available in csv format (Whiskeytown_GrainSize_v2.csv) accompanied by CSDGM FGDC-compliant metadata.
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.

How can I download or order the data?

Availability in digital form:

Data format:	Sediment grain-size analyses data presented in comma-delimited format (csv) along with CSDGM FGDC-compliant metadata in format comma-delimited text (version Excel v. 16.47.1) Size: 0.05204
Network links:	https://www.sciencebase.gov/catalog/file/get/64a31377d34ef77fcb057059 https://doi.org/10.5066/P9TUTK7J

Cost to order the data: None.

What hardware or software do I need in order to use the data set?
These data can be viewed with Microsoft Excel, LibreOffice, Apple Numbers, or any text-reading software.

Who wrote the metadata?

Dates:: Last modified: 01-Sep-2023
Metadata author:: U.S. Geological Survey, Pacific Coastal and Marine Science Center

Attn: PCMSC Science Data Coordinator

2885 Mission Street
Santa Cruz, CA

831-460-7401 (voice)

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

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