Geospatial data for the Vegetation Mapping Inventory Project of Glen Canyon National Recreation Area and Rainbow Bridge National Monument

The files linked to this reference are the geospatial data created as part of the completion of the baseline vegetation inventory project for the NPS park unit. Current format is ArcGIS file geodatabase but older formats may exist as shapefiles.

Aerial photointerpretation was conducted by the Project Manager with the help of an assistant mapper between the fall of 2012 and fall of 2014, using the 2009 1-meter spatial resolution National Agriculture Imagery Program (NAIP) imagery for the Utah portions of GLCA, and the 2010 1-meter spatial resolution NAIP for the Arizona portions of GLCA as the base image layers. The project used the program standard minimum mapping unit (MMU) of 0.5 ha with few exceptions. The majority of the mapping work was performed using ArcGIS editing tools and onscreen, heads-up digitizing, aided by ancillary datasets. Map classes were defined for the project by the primary photointerpreter (PI) with input from the GLCA Chief Scientist. A draft vegetation map and associated spatial database were completed for the Orange Cliffs section of GLCA in the summer of 2014 and for the remainder of GLCA/RABR in the late fall of 2014.

Forty-eight map classes represented by 33,691 polygons were developed for GLCA/RABR. A total of 31,058 polygons represent 37 natural or semi-natural vegetation map classes covering 75% of the mapping project area. Eleven additional land use/land cover and geologic map classes describe 2,633 polygons (25% of the area). Average polygon size across all map classes is 23.1 ha (57.2 acres). Blackbrush Shrublands had the highest number of polygons (5,560) polygons covering 14.5% of the total vegetated mapping area.

Data and Resources

Field Value
accessLevel public
bureauCode {010:24}
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
dataQuality true
identifier NPS_DataStore_2247840
issued 2014-01-01
landingPage https://irma.nps.gov/DataStore/Reference/Profile/2247840
modified 2014-01-01
old-spatial -111.659218,36.81634,-109.945038,38.4993858
programCode {010:118,010:119}
publisher National Park Service
references {https://irma.nps.gov/DataStore/Reference/Profile/2247840}
resource-type Dataset
source_datajson_identifier true
source_hash 9304eaf639209b93e1ea13ab99a851b952da3849
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-111.659218, 36.81634], [-111.659218, 38.4993858], [-109.945038, 38.4993858], [-109.945038, 36.81634], [-111.659218, 36.81634]]]}
temporal 2012-01-01/2014-01-01
theme {"Geospatial Dataset"}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • accuracy-assessment
  • amerigeo
  • amerigeoss
  • botanical-survey
  • ckan
  • classification
  • geo
  • geodatabase
  • geoss
  • habitat-types
  • imagery
  • national
  • national-vegetation-classification
  • north-america
  • nvc
  • nvcs
  • plots
  • releve
  • remote-sensing
  • united-states
  • usnvcs
  • vegetation
  • vegetation-inventory
  • vegetation-map
  • vegetation-mapping
isopen False
license_id notspecified
license_title License not specified
maintainer NPS IRMA Help
maintainer_email irma@nps.gov
metadata_created 2025-11-22T10:04:47.622329
metadata_modified 2025-11-22T10:04:47.622333
notes The files linked to this reference are the geospatial data created as part of the completion of the baseline vegetation inventory project for the NPS park unit. Current format is ArcGIS file geodatabase but older formats may exist as shapefiles. Aerial photointerpretation was conducted by the Project Manager with the help of an assistant mapper between the fall of 2012 and fall of 2014, using the 2009 1-meter spatial resolution National Agriculture Imagery Program (NAIP) imagery for the Utah portions of GLCA, and the 2010 1-meter spatial resolution NAIP for the Arizona portions of GLCA as the base image layers. The project used the program standard minimum mapping unit (MMU) of 0.5 ha with few exceptions. The majority of the mapping work was performed using ArcGIS editing tools and onscreen, heads-up digitizing, aided by ancillary datasets. Map classes were defined for the project by the primary photointerpreter (PI) with input from the GLCA Chief Scientist. A draft vegetation map and associated spatial database were completed for the Orange Cliffs section of GLCA in the summer of 2014 and for the remainder of GLCA/RABR in the late fall of 2014. Forty-eight map classes represented by 33,691 polygons were developed for GLCA/RABR. A total of 31,058 polygons represent 37 natural or semi-natural vegetation map classes covering 75% of the mapping project area. Eleven additional land use/land cover and geologic map classes describe 2,633 polygons (25% of the area). Average polygon size across all map classes is 23.1 ha (57.2 acres). Blackbrush Shrublands had the highest number of polygons (5,560) polygons covering 14.5% of the total vegetated mapping area.
num_resources 2
num_tags 25
title Geospatial data for the Vegetation Mapping Inventory Project of Glen Canyon National Recreation Area and Rainbow Bridge National Monument