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

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.

Data and Resources

Field Value
accessLevel public
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catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
datagov_dedupe_retained 20220722114234
identifier USGS:5eb5ceaf82ce25b5135ae895
metadata_type geospatial
modified 20211013
old-spatial {"type": "Polygon", "coordinates": [[[-121.6739, 38.26705], [-121.6739, 38.333489], [ -121.6579, 38.333489], [ -121.6579, 38.26705], [-121.6739, 38.26705]]]}
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 499bd4145bfa87597fe503dfede34237ef7eeb01
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-121.6739, 38.26705], [-121.6739, 38.333489], [ -121.6579, 38.333489], [ -121.6579, 38.26705], [-121.6739, 38.26705]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • bulk-density
  • ckan
  • cmgp
  • coastal-and-marine-geology-program
  • geo
  • geoss
  • grab-sampling
  • grain-size-analysis
  • liberty-island
  • little-holland-tract
  • national
  • north-america
  • oceans
  • pacific-coastal-and-marine-science-center
  • pcmsc
  • push-coring
  • sacramento-san-joaquin-delta
  • sea-floor-characteristics
  • sediment
  • sediment-transport
  • sedimentation
  • state-of-california
  • substrate
  • u-s-bureau-of-reclamation
  • u-s-geological-survey
  • unconsolidated-deposits
  • united-states
  • usbr
  • usgs
  • usgs-5eb5ceaf82ce25b5135ae895
isopen False
license_id notspecified
license_title License not specified
maintainer PCMSC Science Data Coordinator
maintainer_email pcmsc_data@usgs.gov
metadata_created 2025-11-20T16:28:00.582573
metadata_modified 2025-11-20T16:28:00.582577
notes 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.
num_resources 2
num_tags 32
title Grain size and bulk density from Little Holland Tract and Liberty Island, Sacramento-San Joaquin Delta, California, 2015 to 2019