Surface-sediment grain-size distributions of the Elwha River delta, Washington, February 2016

This portion of the data release presents sediment grain-size data from samples collected on the Elwha River delta, Washington, in February 2016. Surface sediment was collected from 83 locations using a small ponar, or 'grab' sampler from the R/V Frontier in water depths between 17 and 1 m around the delta. An additional 18 samples were collected by hand at low tide. A handheld global satellite navigation system (GNSS) receiver was used to determine the locations of sediment samples. The grain size distributions of suitable samples were determined using standard techniques developed by the USGS Pacific Coastal and Marine Science Center sediment lab. Grab samples that yielded less than 50 g of sediment were omitted from analysis and are classified as "no sample". The grain-size data are provided in a comma-delimited spreadsheet (.csv).

Data and Resources

Field Value
accessLevel public
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identifier USGS:57f7fd11e4b0bc0bec0a1be5
metadata_type geospatial
modified 20211014
old-spatial -123.5846, 48.1328, -123.473, 48.1543
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 3c2baeab5adf7cd559a443697358598af579bb6d
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-123.5846, 48.1328], [-123.5846, 48.1543], [ -123.473, 48.1543], [ -123.473, 48.1328], [-123.5846, 48.1328]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • clallam-county
  • elwha-river
  • geo
  • geoss
  • global-positioning-system-gps-observations
  • gps-global-positioning-system
  • grain-size-analysis
  • national
  • north-america
  • ocean-processes
  • oceans
  • olympic-peninsula
  • sediment
  • sediment-transport
  • sedimentation
  • strait-of-juan-de-fuca
  • substrate
  • united-states
  • usgs-57f7fd11e4b0bc0bec0a1be5
isopen False
license_id notspecified
license_title License not specified
maintainer PCMSC Science Data Coordinator
maintainer_email pcmsc_data@usgs.gov
metadata_created 2025-11-21T16:46:19.885761
metadata_modified 2025-11-21T16:46:19.885765
notes This portion of the data release presents sediment grain-size data from samples collected on the Elwha River delta, Washington, in February 2016. Surface sediment was collected from 83 locations using a small ponar, or 'grab' sampler from the R/V Frontier in water depths between 17 and 1 m around the delta. An additional 18 samples were collected by hand at low tide. A handheld global satellite navigation system (GNSS) receiver was used to determine the locations of sediment samples. The grain size distributions of suitable samples were determined using standard techniques developed by the USGS Pacific Coastal and Marine Science Center sediment lab. Grab samples that yielded less than 50 g of sediment were omitted from analysis and are classified as "no sample". The grain-size data are provided in a comma-delimited spreadsheet (.csv).
num_resources 2
num_tags 22
title Surface-sediment grain-size distributions of the Elwha River delta, Washington, February 2016