Particle Size Analysis for Bridge Scour Countermeasure Assessments at Select Bridges in the United States, 2014-18
type: Dataset
description: These data are supplemental rip-rap gradation data (Wolman Pebble Count) in text (.txt) format, collected during 2014-2018 field seasons for select bridges in the United States. These data were collected using a measuring tape to determine riprap gradation (D15, D50, D85, and D100) on in-place riprap at bridge piers and/or abutments at various locations in each study reach. They supplement the Geospatial Data for Bridge Scour Countermeasure Assessments at Select Bridges in the United States, 2016–18. For high-resolution sites, traditional multibeam surveys were conducted using methods described in Huizinga (2015).
issued: 2025-11-22T04:45:53.750712
modified: 20200820
spatial: Location
contact point: Organization
  fn: Taylor J. Dudunake
keyword: amerigeo
keyword: amerigeoss
keyword: ascii
keyword: bathymetry
keyword: brandywine-creek
keyword: bridge-piers
keyword: ckan
keyword: fox-river
keyword: geo
keyword: geology
keyword: geoss
keyword: grand-river
keyword: ia
keyword: inland-waters
keyword: inlandwaters
keyword: iowa
keyword: missouri
keyword: mo
keyword: multibeam
keyword: national
keyword: new-jersey
keyword: nj
keyword: north-america
keyword: old-mans-creek
keyword: pa
keyword: pennsylvania
keyword: perkiomen-creek
keyword: riprap
keyword: saddle-river
keyword: thompson-river
keyword: u-s-geological-survey
keyword: united-states
keyword: usa
keyword: usgs
keyword: usgs-5a0e120ae4b09af898cf2c9a
keyword: water-depth
keyword: wolman
keyword: xyz
theme: {geospatial}

Original Metadata
type: Distribution
description: The metadata original format
format: XML
issued: 2022-08-07T03:42:30.783487
modified: 2025-11-22T04:45:53.732102
access URL: https://data.usgs.gov/datacatalog/metadata/USGS.5a0e120ae4b09af898cf2c9a.xml
media type: text/xml

Digital Data
type: Distribution
description: Landing page for access to the data
format: XML
issued: 2022-08-07T03:42:30.783493
modified: 2025-11-22T04:45:53.732530
access URL: https://doi.org/10.5066/F7WW7G4W
media type: application/http

US Migrating
type: Agent