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  • National Hydrography Dataset (NHD) - USGS National Map Downloadable Data Collection

    Metadata Updated: January 26, 2017

    The USGS National Hydrography Dataset (NHD) Downloadable Data Collection from The National Map (TNM) is a comprehensive set of digital spatial data that encodes information about naturally occurring and constructed bodies of surface water (lakes, ponds, and reservoirs), paths through which water flows (canals, ditches, streams, and rivers), and related entities such as point features (springs, wells, stream gages, and dams). The information encoded about these features includes classification and other characteristics, delineation, geographic name, position and related measures, a "reach code" through which other information can be related to the NHD, and the direction of water flow. The network of reach codes delineating water and transported material flow allows users to trace movement in upstream and downstream directions. In addition to this geographic information, the dataset contains metadata that supports the exchange of future updates and improvements to the data. The NHD supports many applications, such as making maps, geocoding observations, flow modeling, data maintenance, and stewardship. For additional information on NHD, go to https://nhd.usgs.gov/.

    Access & Use Information

    License: Creative Commons Attribution

    Collection

    This dataset is a collection of other datasets.

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    Downloads & Resources

    Dates

    Metadata Date December 7, 2016
    Metadata Created Date October 7, 2014
    Metadata Updated Date January 26, 2017
    Reference Date(s) January 1, 2016 (publication)
    Frequency Of Update irregular

    Metadata Source

    Harvested from USGS National Hydrography Dataset (NHD) Downloadable Data Collection Harvest Source

    Graphic Preview

    Thumbnail JPG image

    Additional Metadata

    Resource Type Dataset
    Metadata Date December 7, 2016
    Metadata Created Date October 7, 2014
    Metadata Updated Date January 26, 2017
    Reference Date(s) January 1, 2016 (publication)
    Responsible Party U.S. Geological Survey, National Geospatial Technical Operations Center (Point of Contact)
    Contact Email
    Access Constraints Use Constraints: None. However, users should be aware that temporal changes may have occurred since this data set was collected and that some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. Acknowledgment of the U.S. Geological Survey would be appreciated for products derived from these data., Access Constraints: None
    Bbox East Long -64
    Bbox North Lat 72
    Bbox South Lat 10
    Bbox West Long -179
    Collection Metadata true
    Coupled Resource
    Frequency Of Update irregular
    Graphic Preview Description Thumbnail JPG image
    Graphic Preview File https://thor-f5.er.usgs.gov/ngtoc/metadata/waf/collections/nhd_dillon.jpg
    Graphic Preview Type JPEG
    Guid
    Harvest Object Id 7331bd8d-b095-4512-a515-0e866da369d3
    Harvest Source Id 6533ae1c-bee5-4134-b504-417e62ceba22
    Harvest Source Title USGS National Hydrography Dataset (NHD) Downloadable Data Collection Harvest Source
    Licence No liability for content or accuracy is presumed by USGS for data.
    Metadata Language
    Metadata Type geospatial
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2001-01-01

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