Geospatial data for the Vegetation Mapping Inventory Project of San Juan Island National Historic Park

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.

Prior to conducting field visits, existing vegetation maps, soils maps, wetland locations, and 2007 NAIP 6-inch color orthophotos, provided by the NPS, were used to delineate preliminary polygons using ArcGIS™ 9.3.1. Each polygon was assigned a "GIS_Poly" code. Some areas were difficult to map without field verification. A total of 544 polygons were mapped in the park. Vegetation classified at the Alliance-level was mapped correctly with an overall accuracy of 82.0 ± 5.2% (90% confidence intervals) and increases at higher NVC levels to 86.8%± 4.6% at the Division-level. Twenty-three of 32 Alliances in the AA (72%) meet the user‘s accuracy requirement of 80% established by the National Park Service Vegetation Inventory Program.

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_2233385
issued 2012-06-01
landingPage https://irma.nps.gov/DataStore/Reference/Profile/2233385
modified 2012-06-01
old-spatial -124.761482,45.0340538,-119.5767,49.002388
programCode {010:118,010:119}
publisher National Park Service
references {https://irma.nps.gov/DataStore/Reference/Profile/2233385}
resource-type Dataset
source_datajson_identifier true
source_hash afd63862efab0fa394068c2a30cee8c1793f7d3b
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-124.761482, 45.0340538], [-124.761482, 49.002388], [-119.5767, 49.002388], [-119.5767, 45.0340538], [-124.761482, 45.0340538]]]}
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 2025-11-22T15:53:43.801757
metadata_modified 2025-11-22T15:53:43.801761
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. Prior to conducting field visits, existing vegetation maps, soils maps, wetland locations, and 2007 NAIP 6-inch color orthophotos, provided by the NPS, were used to delineate preliminary polygons using ArcGIS™ 9.3.1. Each polygon was assigned a "GIS_Poly" code. Some areas were difficult to map without field verification. A total of 544 polygons were mapped in the park. Vegetation classified at the Alliance-level was mapped correctly with an overall accuracy of 82.0 ± 5.2% (90% confidence intervals) and increases at higher NVC levels to 86.8%± 4.6% at the Division-level. Twenty-three of 32 Alliances in the AA (72%) meet the user‘s accuracy requirement of 80% established by the National Park Service Vegetation Inventory Program.
num_resources 1
num_tags 25
title Geospatial data for the Vegetation Mapping Inventory Project of San Juan Island National Historic Park