Dataset description: Grain size and bulk density from Little Holland Tract and Liberty Island, Sacramento-San Joaquin Delta, California, 2015 to 2019 (ver. 3.0, April 2023)

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.

Contacts

Contact	Jessica R Lacy PCMSC_data@usgs.gov

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Location of materials and files

Public files	https://www.sciencebase.gov/catalog/file/get/63af6b7ad34e92aad3ca60ee https://www.sciencebase.gov/catalog/item/63af6b7ad34e92aad3ca60ee https://doi.org/10.5066/F7V1241K
Metadata	https://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/ScienceBase/DR_F7V1241K/GrainSizeBD_LHT-LI_2015to2019.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
2016-607-FA	Van Veen sea floor surface grab
2015-659-FA	Van Veen sea floor surface grab
2016-623-FA	sedimenttrap
2016-662-FA	samples Atterburg samples
2016-669-FA	samples Atterburg samples
2015-663-FA	Van Veen sea floor surface grab
2015-678-FA	Van Veen sea floor surface grab
2017-641-FA	Push corer Core inserted into the sediment 'by hand'
2017-613-FA	sampling equipment
2016-681-FA	sampling equipment
2017-664-FA	Push corer Core inserted into the sediment 'by hand'
2018-626-FA	pushcore Truck-mounted, direct-push Megaprobe core sampler
2018-644-FA	Push corer Core inserted into the sediment 'by hand'
2018-673-FA	Push corer Core inserted into the sediment 'by hand'
2017-619-FA	push-corer
2018-687-FA	Push corer Core inserted into the sediment 'by hand'
2019-615-FA	Push corer Core inserted into the sediment 'by hand'
2019-644-FA	Push corer Core inserted into the sediment 'by hand'