Ground control point locations for UAS survey of the Liberty Island Conservation Bank Wildlands restoration site, Sacramento-San Joaquin Delta, California, 2018-10-23

This portion of the data release presents the locations of the temporary ground control points (GCPs) used for the structure-from-motion (SfM) processing of the imagery collected during the Unmanned Aerial System (UAS) survey on of the Liberty Island Conservation Bank Wildlands restoration site in the Sacramento-San Joaquin Delta on 2018-10-23. The GCPs were used to establish ground control for the survey and consisted of 24 small (80 x 80 centimeter) square tarps with black-and-white cross patterns placed on the ground surface throughout the mapping area during the survey. The GCP positions were measured using RTK GPS, with corrections from a GPS base station located approximately 3 kilometers south of the study area. The GCP positions are presented in a comma-delimited text file.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
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catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier USGS:5f24b3e582cef313ed979696
metadata_type geospatial
modified 20201019
old-spatial -121.6755, 38.3260, -121.6677, 38.3358
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 0b5a47a32024d5f8365df62052c532d8d5913ac0
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-121.6755, 38.3260], [-121.6755, 38.3358], [ -121.6677, 38.3358], [ -121.6677, 38.3260], [-121.6755, 38.3260]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • aerial-photography
  • altimetry
  • amerigeo
  • amerigeoss
  • bathymetry-and-elevation
  • cache-slough
  • chmrp
  • ckan
  • coastal-and-marine-hazards-and-resources-program
  • elevation
  • fragile-ecosystems
  • geo
  • geomorphology
  • geoscientificinformation
  • geospatial-datasets
  • geoss
  • image-mosaics
  • liberty-island
  • national
  • north-america
  • pacific-coastal-and-marine-science-center
  • pcmsc
  • photography
  • remote-sensing
  • sacramento-river
  • sacramento-river-deep-water-ship-channel
  • sacramento-san-joaquin-delta
  • san-joaquin-river
  • state-of-california
  • structure-from-motion
  • topographic-maps
  • topography
  • u-s-geological-survey
  • uas
  • united-states
  • unmanned-aerial-system
  • usgs
  • usgs-5f24b3e582cef313ed979696
  • wetland-restoration
isopen False
license_id notspecified
license_title License not specified
maintainer PCMSC Science Data Coordinator
maintainer_email pcmsc_data@usgs.gov
metadata_created 2025-11-19T23:00:42.470417
metadata_modified 2025-11-19T23:00:42.470422
notes This portion of the data release presents the locations of the temporary ground control points (GCPs) used for the structure-from-motion (SfM) processing of the imagery collected during the Unmanned Aerial System (UAS) survey on of the Liberty Island Conservation Bank Wildlands restoration site in the Sacramento-San Joaquin Delta on 2018-10-23. The GCPs were used to establish ground control for the survey and consisted of 24 small (80 x 80 centimeter) square tarps with black-and-white cross patterns placed on the ground surface throughout the mapping area during the survey. The GCP positions were measured using RTK GPS, with corrections from a GPS base station located approximately 3 kilometers south of the study area. The GCP positions are presented in a comma-delimited text file.
num_resources 2
num_tags 39
title Ground control point locations for UAS survey of the Liberty Island Conservation Bank Wildlands restoration site, Sacramento-San Joaquin Delta, California, 2018-10-23