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USFWS Utah Mexican Spotted Owl Willey 1997 Habitat Model [U.S. Fish and Wildlife Service]

US Fish and Wildlife Service, Utah Ecological Services Field Office · 1997 Full Details

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Title
USFWS Utah Mexican Spotted Owl Willey 1997 Habitat Model [U.S. Fish and Wildlife Service]
Description
The Willey and Spotskey (1997) model was developed to help biologists identify potential Mexican spotted owl habitat in Utah. This data is intended to aid in the analysis of effects to Mexican spotted owl from proposed project-related disturbance and should be used in consultation with the USFWS Utah Ecological Services Field Office ( URL ). Based on the habitat requirements stated in the 2012 Recovery Plan ( URL ), this model uses slope, aspect, curvature, and vegetation to identify potential habitat. It relies on a slope curvature index that is valuable for predicting surface ruggedness. The 1997 model likely overestimates the extent of owl habitat throughout the state and includes foraging, wintering, and dispersal habitat. For project-planning, we recommend its use in concert with an analysis of aerial imagery to eliminate non-canyon habitat, such as mountain ridges or straight cliff edges. Additionally, field assessments should be conducted to identify suitable habitat that requires occupancy surveys.
Creator
US Fish and Wildlife Service, Utah Ecological Services Field Office
Temporal Coverage
1997
Date Issued
2022-09-26
Rights
The United States Fish and Wildlife Service (Service) shall not be held liable for improper or incorrect use of the data described and/or contained herein. While the Service makes every reasonable effort to ensure the accuracy and completeness of data provided for distribution, it may not have the necessary accuracy or completeness required for every possible intended use. The Service recommends that data users consult the associated metadata record to understand the quality and possible limitations of the data. The Service creates metadata records in accordance with the standards endorsed by the Federal Geographic Data Committee. As a result of the above considerations, the Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of the data. It is the responsibility of the data user to use the data in a manner consistent with the limitations of geospatial data in general and these data in particular. Although these data have been processed successfully on a computer system at the Service, no warranty, expressed or implied, is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This applies to the use of the data both alone and in aggregate with other data and information.
Access Rights
Public
Format
ArcGIS FeatureLayer
Language
English
Date Added
August 10, 2025
Provenance Statement
The metadata for this resource was last retrieved from U.S. Fish and Wildlife Service Open Data on 2025-08-24.

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Cite and Reference

  • Citation
    US Fish and Wildlife Service, Utah Ecological Services Field Office (2022). USFWS Utah Mexican Spotted Owl Willey 1997 Habitat Model [U.S. Fish and Wildlife Service]. . https://gis-fws.opendata.arcgis.com/datasets/fws::usfws-utah-mexican-spotted-owl-willey-1997-habitat-model (web service)
  • BTAA Geoportal Link

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