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    • BLM CO Areas of Critical Environmental Concern

    Metadata Updated: September 11, 2025

    This data set consist of digital data describing Areas of Critical and Environmental Concern (ACEC) for Public Lands in the State of Colorado. ACECs are designated by decisions made during BLM Resource Management Planning. Existing ACECs have a Resource value tied to them. An example of these resources would be: Threatened and Endangered Plants. Other areas of concern have also been captured within this theme. When the users opens up the attribute table for this theme the user will notice ACEC follows most of names for each area. Some BLM field offices also included Research Natural Areas (RNAs) and Outstanding Natural Areas (ONAs) within their layer. The data set was compiled from the most current data collected from the BLM Colorado Field Offices. In some cases data boundaries were snapped to the BLM’s Geographic Coordinate Data Base (GCDB). The GCDB is a statewide survey grid that the BLM bases land boundaries on. Also, in some cases within the ACECs, outer boundary land holdings other than BLM have been cut out to show these Land Patterns. In other cases, it has not. It is suggested that the user of this data also download the BLM’s most current Surface Management Agency to compare and contrast land holdings within each ACEC.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: us-pd

    Downloads & Resources

    Dates

    Metadata Created Date September 11, 2025
    Metadata Updated Date September 11, 2025

    Metadata Source

    Harvested from DOI BLM DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 11, 2025
    Metadata Updated Date September 11, 2025
    Publisher Bureau of Land Management
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=b2956b5800ba4e37b5f1a747af5af74a&sublayer=0
    Data First Published 2023-04-28T18:09:10Z
    Data Last Modified 2025-05-16T17:23:42Z
    Category geospatial
    Public Access Level public
    Bureau Code 010:04
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://ddi.doi.gov/blm-data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 5461a2af-f9ca-4cf6-988a-8fc687985a4e
    Harvest Source Id ceb4b469-e13a-40f5-af40-5fe065f74ffa
    Harvest Source Title DOI BLM DCAT-US
    Homepage URL https://gbp-blm-egis.hub.arcgis.com/datasets/BLM-EGIS::blm-co-areas-of-critical-environmental-concern-1
    License http://www.usa.gov/publicdomain/label/1.0/
    Metadata Type geospatial
    Old Spatial -109.0245,36.9298,-104.4854,40.9872
    Program Code 010:000
    Source Datajson Identifier True
    Source Hash 441cc50b24c5ad1b295cdf751cfc6c0f10ad9aca1a3d0c261a50e741a82264bf
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -109.0245, 36.9298, -109.0245, 40.9872, -104.4854, 40.9872, -104.4854, 36.9298, -109.0245, 36.9298}

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