Ground control points collected during unmanned aerial systems (UAS) flights: Potomac River in Point of Rocks, Maryland on October 24, 2019

Low-altitude digital images were taken over an area of the Potomac River in Point of Rocks, Maryland using 3DR Solo unmanned aircraft systems (UAS) on October 24, 2019. The imagery was collected for the purpose of evaluating UAS assessment of river habitat data such as water depth, substrate type, and water clarity. Some photographs contain black and white targets used as ground control points (GCPs), which were surveyed by a field crew with a high-precision (GNSS) Global Navigation Satellite System and/or containing internal post processing kinematic (PPK) GPS system. This data release contains the csv files containing the latitude and longitude coordinates, in Universal Transverse Mercator Zone 18N referenced to the North American Datum of 1983 (2011), of the ground control points.

Data e Risorse

Campo Valore
accessLevel public
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identifier USGS:5e46f694e4b0ff554f68372f
metadata_type geospatial
modified 20200821
old-spatial {"type": "Polygon", "coordinates": [[[-77.55000, 39.26480], [-77.55000, 39.27700], [ -77.52800, 39.27700], [ -77.52800, 39.26480], [-77.55000, 39.26480]]]}
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
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theme {geospatial}
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • aeropoints
  • amerigeo
  • amerigeoss
  • ceramic-tile
  • ckan
  • elevation
  • gcp
  • geo
  • geoscientificinformation
  • geoss
  • global-positioning-system
  • gps
  • ground-control-points
  • location
  • maryland
  • national
  • navigation
  • navigational-data
  • north-america
  • point-of-rocks
  • potomac-river
  • u-s-geological-survery
  • united-states
  • usa
  • usgs
  • usgs-5e46f694e4b0ff554f68372f
isopen False
license_id notspecified
license_title License not specified
maintainer Matthew J Cashman
maintainer_email mcashman@usgs.gov
metadata_created 2025-11-22T17:32:05.013000
metadata_modified 2025-11-22T17:32:05.013004
notes Low-altitude digital images were taken over an area of the Potomac River in Point of Rocks, Maryland using 3DR Solo unmanned aircraft systems (UAS) on October 24, 2019. The imagery was collected for the purpose of evaluating UAS assessment of river habitat data such as water depth, substrate type, and water clarity. Some photographs contain black and white targets used as ground control points (GCPs), which were surveyed by a field crew with a high-precision (GNSS) Global Navigation Satellite System and/or containing internal post processing kinematic (PPK) GPS system. This data release contains the csv files containing the latitude and longitude coordinates, in Universal Transverse Mercator Zone 18N referenced to the North American Datum of 1983 (2011), of the ground control points.
num_resources 2
num_tags 26
title Ground control points collected during unmanned aerial systems (UAS) flights: Potomac River in Point of Rocks, Maryland on October 24, 2019