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    • BLM Natl AIM Lotic Indicators Hub

    Metadata Updated: September 25, 2025

    This feature class includes monitoring data collected nationally to understand the status, condition, and trend of resources on BLM lands. Data are collected in accordance with the BLM Assessment, Inventory, and Monitoring (AIM) Strategy. The AIM Strategy specifies a probabilistic sampling design, standard core indicators and methods, electronic data capture and management, and integration with remote sensing. Attributes include the BLM aquatic core indicators: pH, conductivity, temperature, pool depth, length, frequency, streambed particles sizes, bank stability and cover, floodplain connectivity, large woody debris, macroinvertebrate biological integrity, ocular estimates of vegetative type, cover, and structure and canopy cover. In addition, the contingent indicators of total nitrogen and phosphorous, turbidity, bank angle, thalweg depth profile and quantitative vegetation estimates (see the Data Structure and Attribute Information section for exact details on attributes). Data were collected and managed by BLM Field Offices, BLM Districts, and/or affiliated field crews with support from the BLM National Operations Center. Data are stored in a centralized database (BLM AIM Lotic Database) at the BLM National Operations Center.

    Access & Use Information

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

    Downloads & Resources

    Dates

    Metadata Created Date September 25, 2025
    Metadata Updated Date September 25, 2025

    Metadata Source

    Harvested from DOI BLM DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 25, 2025
    Metadata Updated Date September 25, 2025
    Publisher Bureau of Land Management
    Maintainer
    Identifier https://blm-egis.maps.arcgis.com/home/item.html?id=97e9d82469194fab88e4193ba591fb72&sublayer=5
    Data First Published 2022-03-08T21:34:18Z
    Data Last Modified 2025-03-17T23:01:08Z
    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 78888551-c4b8-4a4d-b879-4e87d8aee470
    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-natl-aim-lotic-indicators-hub
    License http://www.usa.gov/publicdomain/label/1.0/
    Metadata Type geospatial
    Old Spatial -157.514,70.7611,-102.3656,32.0226
    Program Code 010:000
    Source Datajson Identifier True
    Source Hash d142a4e6b1e7b2c507bf65d3f464ce5aeebbbb820b05284fdf8f862c3e07cd39
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -157.514, 70.7611, -157.514, 32.0226, -102.3656, 32.0226, -102.3656, 70.7611, -157.514, 70.7611}

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