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The HydroLink Tool


U.S. Geological Survey, 2016, The HydroLink Tool, accessed [Month DD, YYYY], at URL [],


The HydroLink App is no longer supported. We recommend exploring the Hydrography Addressing Tool or related Python Hydrolink methods to meet your hydrolink needs. The HydroLink Tool aids in generating a linear reference for point data to the NHDPlusV2.1 Medium Resolution and NHD High Resolution hydrography layers. The tool employs the researcher’s local, field-based knowledge of the geospatial features where data were collected to improve both the spatial accuracy of the research data and assist in the linkage to these national surface water datasets. Once the point location data are verified and linear referencing is complete, the output dataset includes the verified latitude and longitude coordinates and additional attributes to [...]

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“Schema of Data Fields added to HydroLinked Data”
4.06 KB application/json


The National Hydrography Datasets (both NHDPlusV2.1 and NHD HR) are used as a geospatial framework for many regional and national scale modeling efforts. Addressing information to the NHD in a consistent way allows for integration and querying across the hydrography networks.


Data source
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Additional Information


Type Scheme Key
DOI 10.5066/P9KRWCFL

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