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Status of ongoing and completed NYS hydrography dataset edits. Status includes edits made to the USGS National Hydrography Dataset (NHD) made prior to October 1, 2023 as well as edits made after the dataset was retired.

The NYS Hydrography Web Services can be accessed at

Hollow Fill Symbology: https://gisservices.its.ny.gov/arcgis/rest/services/NYS_Hydrography_HollowFill/MapServer
Solid Symbology: https://gisservices.its.ny.gov/arcgis/rest/services/NYS_Hydrography/MapServer

A new vision for national hydrography is underway via the USGS 3D Hydrography Program (3DHP) In the meantime NYS ITS Geospatial Services will continue to update the NYS Hydrography dataset in a similar way to the NHD dataset, we will use elevation derived hydro breaklines that were generated via the USGS 3D Elevation Program (3DEP).

More information can be found on the status and update process via More information can be found on the status and update process via https://gis.ny.gov/nys-hydrography

For more information on the 3DHP program and status please visit https://gis.ny.gov/3dhp

Please contact NYS ITS Geospatial Services at nysgis@its.ny.gov if you have any questions.

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