Northern tamarisk beetle impact and classification maps, Grand Canyon National Park, Arizona

These data are satellite image-derived, classification maps of tamarisk (Tamarisk spp.) along the Colorado River in Grand Canyon National Park from river km 315 to 363, approximately from Parashant Canyon to Diamond Creek tributaries. The classification maps are published in TIF raster format. Two maps are published: 1) a classification of healthy, defoliated, and tamarisk canopy dieback from the tamarisk beetle (Diorhabda carinulata) in May 2019, and 2 a classification of healthy and beetle-impacted tamarisk in August 2019. Tamarisk was mapped using a Spectral Angle Mapper supervised classification derived from 2 m resolution, multispectral WorldView-2 imagery, with an overall accuracy of 80.0% in May 2019 and 83.1% in August 2019. The area of healthy, defoliated, and canopy dieback totaled 43.6, 2.9, and 18.2 ha, respectively, in May, and the area of healthy and beetle-impacted tamarisk totaled 19.1 and 35.6 ha, respectively, in August.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier USGS:5f52559e82ce4c3d123bf041
metadata_type geospatial
modified 20210316
old-spatial -114.02379, 35.740126, -111.476798, 36.965854
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 145269696fd1c76a7f5f8fa94118348ff2444313
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-114.02379, 35.740126], [-114.02379, 36.965854], [ -111.476798, 36.965854], [ -111.476798, 35.740126], [-114.02379, 35.740126]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • arizona
  • beetle-impacted
  • biota
  • canopy-dieback
  • change-detection
  • ckan
  • classification-map
  • colorado-river
  • defoliated
  • diamond-creek
  • diorhabda-carinulata
  • ecosystem-management
  • ecosystem-monitoring
  • geo
  • geoss
  • grand-canyon-national-park
  • healthy
  • national
  • north-america
  • parashant-canyon
  • remote-sensing
  • remote-sensing-data
  • remote-sensing-images
  • riparian-vegetation
  • satellite-images
  • supervised-classification
  • tamarisk
  • tamarisk-beetle
  • tamarix
  • time-series
  • united-states
  • usgs-5f52559e82ce4c3d123bf041
  • vegetation
  • vegetation-change
  • wetland-ecosystems
isopen False
license_id notspecified
license_title License not specified
maintainer Joel B Sankey
maintainer_email jsankey@usgs.gov
metadata_created 2025-11-22T09:53:03.534742
metadata_modified 2025-11-22T09:53:03.534747
notes These data are satellite image-derived, classification maps of tamarisk (Tamarisk spp.) along the Colorado River in Grand Canyon National Park from river km 315 to 363, approximately from Parashant Canyon to Diamond Creek tributaries. The classification maps are published in TIF raster format. Two maps are published: 1) a classification of healthy, defoliated, and tamarisk canopy dieback from the tamarisk beetle (Diorhabda carinulata) in May 2019, and 2 a classification of healthy and beetle-impacted tamarisk in August 2019. Tamarisk was mapped using a Spectral Angle Mapper supervised classification derived from 2 m resolution, multispectral WorldView-2 imagery, with an overall accuracy of 80.0% in May 2019 and 83.1% in August 2019. The area of healthy, defoliated, and canopy dieback totaled 43.6, 2.9, and 18.2 ha, respectively, in May, and the area of healthy and beetle-impacted tamarisk totaled 19.1 and 35.6 ha, respectively, in August.
num_resources 2
num_tags 37
title Northern tamarisk beetle impact and classification maps, Grand Canyon National Park, Arizona