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Southern Mountain Yellow-Legged Frog Range (N CA DPS) - CWHR A044a [ds2848]

Published by California Department of Fish and Wildlife | State of California | Catalog Last Checked: June 26, 2026 at 08:25 PM | Dataset Last Updated: May 20, 2026 at 06:18 PM
CWHR species range datasets represent the maximum current geographic extent of each species within California. Ranges were originally delineated at a scale of 1:5,000,000 by species-level experts more than 30 years ago and have gradually been revised at a scale of 1:1,000,000. Species occurrence data are used in defining species ranges, but range polygons may extend beyond the limits of extant occurrence data for a particular species. When drawing range boundaries, CDFW seeks to err on the side of commission rather than omission. This means that CDFW may include areas within a range based on expert knowledge or other available information, despite an absence of confirmed occurrences, which may be due to a lack of survey effort. The degree to which a range polygon is extended beyond occurrence data will vary among species, depending upon each species’ vagility, dispersal patterns, and other ecological and life history factors. The boundary line of a range polygon is drawn with consideration of these factors and is aligned with standardized boundaries including watersheds (NHD), ecoregions (USDA), or other ecologically meaningful delineations such as elevation contour lines. While CWHR ranges are meant to represent the current range, once an area has been designated as part of a species’ range in CWHR, it will remain part of the range even if there have been no documented occurrences within recent decades. An area is not removed from the range polygon unless experts indicate that it has not been occupied for a number of years after repeated surveys or is deemed no longer suitable and unlikely to be recolonized. It is important to note that range polygons typically contain areas in which a species is not expected to be found due to the patchy configuration of suitable habitat within a species’ range. In this regard, range polygons are coarse generalizations of where a species may be found. This data is available for download from the CDFW website: https://www.wildlife.ca.gov/Data/CWHR. This range was adopted from the Interagency Conservation Strategy for Mountain Yellow-Legged Frogs in the Sierra Nevada: https://www.fws.gov/sites/default/files/documents/Mountain-Yellow-Legged-Frog-Conservation-Strategy.pdf

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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 style='margin:0 0 0 0;'><span><span>CWHR species range datasets represent the maximum current geographic extent of each species within California. Ranges were originally delineated at a scale of 1:5,000,000 by species-level experts more than 30 years ago and have gradually been revised at a scale of 1:1,000,000. Species occurrence data are used in defining species ranges, but range polygons may extend beyond the limits of extant occurrence data for a particular species. When drawing range boundaries, CDFW seeks to err on the side of commission rather than omission. This means that CDFW may include areas within a range based on expert knowledge or other available information, despite an absence of confirmed occurrences, which may be due to a lack of survey effort. The degree to which a range polygon is extended beyond occurrence data will vary among species, depending upon each species’ vagility, dispersal patterns, and other ecological and life history factors. The boundary line of a range polygon is drawn with consideration of these factors and is aligned with standardized boundaries including watersheds (NHD), ecoregions (USDA), or other ecologically meaningful delineations such as elevation contour lines. While CWHR ranges are meant to represent the current range, once an area has been designated as part of a species’ range in CWHR, it will remain part of the range even if there have been no documented occurrences within recent decades. An area is not removed from the range polygon unless experts indicate that it has not been occupied for a number of years after repeated surveys or is deemed no longer suitable and unlikely to be recolonized. It is important to note that range polygons typically contain areas in which a species is not expected to be found due to the patchy configuration of suitable habitat within a species’ range. In this regard, range polygons are coarse generalizations of where a species may be found. This data is available for download from the CDFW website: </span></span><a href='https://www.wildlife.ca.gov/Data/CWHR' style='text-decoration:underline;' rel='nofollow ugc'><span style='text-decoration:underline;'>https://www.wildlife.ca.gov/Data/CWHR</span></a><span>. </span></p><p style='margin:0 0 0 0;'><span /></p><p style='margin:0 0 0 0;'><span>This range was adopted from the Interagency Conservation Strategy for Mountain Yellow-Legged Frogs in the Sierra Nevada: </span><a href='https://www.fws.gov/sites/default/files/documents/Mountain-Yellow-Legged-Frog-Conservation-Strategy.pdf' target='_blank' style='text-decoration:underline;' rel='nofollow ugc noopener noreferrer'><span>https://www.fws.gov/sites/default/files/documents/Mountain-Yellow-Legged-Frog-Conservation-Strategy.pdf</span></a><span> </span></p><p style='margin:0 0 0 0;'><span /></p></div></div></div>
distribution 
[
  {
    "@type": "dcat:Distribution",
    "title": "ArcGIS Hub Dataset",
    "format": "HTML",
    "accessURL": "https://data-cdfw.opendata.arcgis.com/datasets/CDFW::southern-mountain-yellow-legged-frog-range-n-ca-dps-cwhr-a044a-ds2848"
  },
  {
    "@type": "dcat:Distribution",
    "title": "CWHR Revision Tracking Table",
    "accessURL": "https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=115517"
  },
  {
    "@type": "dcat:Distribution",
    "title": "BIOS Homepage",
    "accessURL": "https://wildlife.ca.gov/Data/BIOS"
  },
  {
    "@type": "dcat:Distribution",
    "title": "CWHR Homepage",
    "accessURL": "https://www.wildlife.ca.gov/Data/CWHR"
  },
  {
    "@type": "dcat:Distribution",
    "title": "CSV",
    "format": "CSV",
    "mediaType": "text/csv",
    "describedBy": "https://data.ca.gov/api/action/datastore_search?resource_id=8c0cc9f2-18b1-4c6c-a2ce-08fc4e92bee0&limit=0",
    "downloadURL": "https://data-cdfw.opendata.arcgis.com/api/download/v1/items/7f406d3c418949f0a5c5494eae02433e/csv?layers=0",
    "describedByType": "application/json"
  },
  {
    "@type": "dcat:Distribution",
    "title": "GeoJSON",
    "format": "GeoJSON",
    "mediaType": "application/geo+json",
    "downloadURL": "https://data-cdfw.opendata.arcgis.com/api/download/v1/items/7f406d3c418949f0a5c5494eae02433e/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/7f406d3c418949f0a5c5494eae02433e/kml?layers=0"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Shapefile",
    "format": "ZIP",
    "mediaType": "application/zip",
    "downloadURL": "https://data-cdfw.opendata.arcgis.com/api/download/v1/items/7f406d3c418949f0a5c5494eae02433e/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/2800_2899/ds2848.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/biosds2848_fpu/FeatureServer/0"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Interagency Conservation Strategy for Mountain Yellow-Legged Frogs in the Sierra Nevada",
    "format": "PDF",
    "mediaType": "application/pdf",
    "downloadURL": "https://www.fws.gov/sites/default/files/documents/Mountain-Yellow-Legged-Frog-Conservation-Strategy.pdf"
  }
]
identifier 46f4b59c-a844-4b43-badd-29866c5cd0b4
issued 2020-05-13T21:40:22.000Z
keyword 
[
  "Auth_CDFW",
  "CAOpenData",
  "CDFW",
  "California",
  "California Department of Fish And Wildlife",
  "California Natural Resources Agency",
  "DS2848_20260513_wm",
  "Rana muscosa pop. 2",
  "Southern Mountain Yellow-Legged Frog North CA DPS",
  "amphibian",
  "biota",
  "california department of fish and wildlife",
  "environment",
  "habitat",
  "natural resources",
  "species",
  "wildlife"
]
license http://www.opendefinition.org/licenses/cc-by
modified 2026-05-20T18:18:43.257Z
publisher 
{
  "name": "California Department of Fish and Wildlife",
  "@type": "org:Organization"
}
theme 
[
  "Natural Resources"
]
title Southern Mountain Yellow-Legged Frog Range (N CA DPS) - CWHR A044a [ds2848]

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