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  • #1 Federal

    Hydrologic landscape regions of the United States

    Hydrologic landscape regions (HLRs) in the United States were delineated by using geographic information system (GIS) tools and statistical methods including principal components and cluster...

    Search relevance: 1.00 | Views last month: 9 | Catalog Last Checked: August 01, 2026 at 05:35 AM
  • #2 Federal

    Select Regional Attributes: Hydrologic Landscape Regions

    This tabular data set represents the percent of Hydrologic Landscape Regions compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States;...

    Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 01, 2026 at 03:00 AM

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