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Vegetation - Modoc Warners [ds3195]

Published by California Department of Fish and Wildlife | State of California | Catalog Last Checked: October 24, 2026 at 08:44 PM | Dataset Last Updated: October 05, 2026 at 11:19 PM
Under contract to the California Department of Fish and Wildlife (CDFW), the North State Planning and Development Collective’s Geographical Information Center (GIC) at Chico State Enterprises collected vegetation survey data and completed fine-scale vegetation mapping in previously unmapped parts of the Modoc Plateau, the Warner Mountains, and the Northwestern Basin and Range ecoregions following the Survey of California Vegetation standards. The mapping study area consists of approximately 2,351,552 acres and includes portions of Modoc, Lassen, Shasta and Siskiyou counties. Vegetation mapping was conducted by the GIC according to the guidelines set forth by the Survey of California Vegetation (SCV), Classification, and Mapping Standards (VegCAMP, 2022) and the National Vegetation Classification System (USNVC, 2019).GIC photo interpreters performed heads-up digitization to delineate stands (polygons) by vegetation type. A total of 111,433 polygons covering the 2,351,552 acres of the project area were created in a geodatabase. Polygons were delineated according to natural color and infrared imagery provided by the National Aerial Inventory Program (NAIP 2020). Photo interpretation was further informed by ancillary data, Hexagon true color and infrared imagery, and Google Earth imagery.The minimum mapping unit (MMU) is 1 acre; exceptions are made for wetlands and riparian types, which were mapped to a ¼ acre MMU and polygons bordering the project boundary, which were mapped to less than ¼ acre MMU.Upon completion of mapping, CDFW created allocations consisting of vegetation polygons for accuracy assessment (AA). In the summer of 2024, GIC and CDFW collected 271 AA surveys, and in the summer of 2025, 394 AA surveys were performed. Once accuracy assessment surveys were completed, AA field data was analyzed and scored by CDFW. The overall Fuzzy Accuracy Assessment score of the final vegetation map is 82.88%. Scores were then returned to the GIC mapping team, and corrections and refinements were made to the geodatabase. More information can be found in the mapping report which is bundled with the published BIOS dataset here: https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/3100_3199/ds3195.zip.

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Complete Metadata
@type dcat:Dataset
accessLevel public
contactPoint 
{
  "fn": "BIOS_Admin",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:geodata@wildlife.ca.gov"
}
description <div style='text-align:Left;'><div><div><p><span>Under contract to the California Department of Fish and Wildlife (CDFW), the North State Planning and Development Collective’s Geographical Information Center (GIC) at Chico State Enterprises collected vegetation survey data and completed fine-scale vegetation mapping in previously unmapped parts of the Modoc Plateau, the Warner Mountains, and the Northwestern Basin and Range ecoregions following the Survey of California Vegetation standards. The mapping study area consists of approximately 2,351,552 acres and includes portions of Modoc, Lassen, Shasta and Siskiyou counties. Vegetation mapping was conducted by the GIC according to the guidelines set forth by the Survey of California Vegetation (SCV), Classification, and Mapping Standards (VegCAMP, 2022) and the National Vegetation Classification System (USNVC, 2019).</span></p><p><span>GIC photo interpreters performed heads-up digitization to delineate stands (polygons) by vegetation type. A total of 111,433 polygons covering the 2,351,552 acres of the project area were created in a geodatabase. Polygons were delineated according to natural color and infrared imagery provided by the National Aerial Inventory Program (NAIP 2020). Photo interpretation was further informed by ancillary data, Hexagon true color and infrared imagery, and Google Earth imagery.</span></p><p><span>The minimum mapping unit (MMU) is 1 acre; exceptions are made for wetlands and riparian types, which were mapped to a ¼ acre MMU and polygons bordering the project boundary, which were mapped to less than ¼ acre MMU.</span></p><p><span>Upon completion of mapping, CDFW created allocations consisting of vegetation polygons for accuracy assessment (AA). In the summer of 2024, GIC and CDFW collected 271 AA surveys, and in the summer of 2025, 394 AA surveys were performed. Once accuracy assessment surveys were completed, AA field data was analyzed and scored by CDFW. The overall Fuzzy Accuracy Assessment score of the final vegetation map is 82.88%. Scores were then returned to the GIC mapping team, and corrections and refinements were made to the geodatabase. More information can be found in the mapping report which is bundled with the published BIOS dataset here: </span><a href='https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/3100_3199/ds3195.zip' target='_blank' style='text-decoration:underline;' rel='nofollow ugc noopener noreferrer'><span>https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/3100_3199/ds3195.zip</span></a><span>.</span></p></div></div></div>
distribution 
[
  {
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    "title": "ArcGIS Hub Dataset",
    "format": "HTML",
    "accessURL": "https://data-cdfw.opendata.arcgis.com/datasets/CDFW::vegetation-modoc-warners-ds3195"
  },
  {
    "@type": "dcat:Distribution",
    "title": "BIOS Homepage",
    "accessURL": "https://wildlife.ca.gov/Data/BIOS"
  },
  {
    "@type": "dcat:Distribution",
    "title": "CSV",
    "format": "CSV",
    "mediaType": "text/csv",
    "downloadURL": "https://data-cdfw.opendata.arcgis.com/api/download/v1/items/a3c2f02bb1014177836acb8f1366c524/csv?layers=0"
  },
  {
    "@type": "dcat:Distribution",
    "title": "GeoJSON",
    "format": "GeoJSON",
    "mediaType": "application/geo+json",
    "downloadURL": "https://data-cdfw.opendata.arcgis.com/api/download/v1/items/a3c2f02bb1014177836acb8f1366c524/geojson?layers=0"
  },
  {
    "@type": "dcat:Distribution",
    "title": "KML",
    "format": "KML",
    "mediaType": "application/vnd.google-earth.kml+xml",
    "downloadURL": "https://data-cdfw.opendata.arcgis.com/api/download/v1/items/a3c2f02bb1014177836acb8f1366c524/kml?layers=0"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Shapefile",
    "format": "ZIP",
    "mediaType": "application/zip",
    "downloadURL": "https://data-cdfw.opendata.arcgis.com/api/download/v1/items/a3c2f02bb1014177836acb8f1366c524/shapefile?layers=0"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Source download (File Geodatabase)",
    "format": "ZIP",
    "mediaType": "application/zip",
    "downloadURL": "https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/3100_3199/ds3195.zip"
  },
  {
    "@type": "dcat:Distribution",
    "title": "ArcGIS GeoService",
    "format": "ArcGIS GeoServices REST API",
    "mediaType": "application/octet-stream",
    "downloadURL": "https://services2.arcgis.com/Uq9r85Potqm3MfRV/arcgis/rest/services/biosds3195_fpu/FeatureServer/0"
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]
identifier 123141c4-9532-4a36-aa71-28b85999d72d
issued 2026-10-05T22:47:59.000Z
keyword 
[
  "Auth_CDFW",
  "CAOpenData",
  "CDFW",
  "California Department of Fish And Wildlife",
  "California Department of Fish and Wildlife",
  "California Natural Resources Agency",
  "DS3195_20261005_wm",
  "Lassen County",
  "MCV",
  "Manual of California Vegetation",
  "Modoc County",
  "NVCS",
  "National Vegetation Classification Standard",
  "Shasta County",
  "Siskiyou County",
  "california department of fish and wildlife"
]
license http://www.opendefinition.org/licenses/cc-by
modified 2026-10-05T23:19:44.509Z
publisher 
{
  "name": "California Department of Fish and Wildlife",
  "@type": "org:Organization"
}
theme 
[
  "Natural Resources"
]
title Vegetation - Modoc Warners [ds3195]

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