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NYS ITS GIS Program Office

Geographic Information Systems Clearinghouse

GIS Data Set Details

Data Set Name Description Theme Metadata
National Hydrography Dataset (NHD) The National Hydrography Dataset (NHD) is a comprehensive set of digital spatial data that contains information about surface water features such as lakes, ponds, streams, rivers, springs and wells. Within the NHD, surface water features are combined to form "reaches," which provide the framework for linking water-related data to the NHD surface water drainage network.  Hydrography
Watersheds/Water Supply

Supporting Documentation

To view or download the NHD visit the USGS National Map Hydrography Viewer:

Or visit the main NHD web page and select "Get Data" to see other download options:

For information about stewardship of the NHD see:

The NHD is managed nationally by USGS, with state agencies acting as local Data Stewards.  Stewards are the designated authority on, and often perform, updates to the data.  NYSDEC is the Steward for NHD data in NYS.

Most NYS NHD was developed by NYSDEC. The original NYS NHD line work was based on the 1:24,000 scale USGS topographic quadrangles. Efforts to improve its spatial and attribute accuracy are ongoing. NYSDEC is currently updating much of the data to better align with the NYS Digital Orthoimagery.


Contact Information:

Timothy Daly
625 Broadway
3rd Floor
Albany, New York  12233-2750

PH: 518-402-9872 E-Mail