Due to a lapse in appropriations, the majority of USGS websites may not be up to date and may not reflect current conditions. Websites displaying real-time data, such as Earthquake and Water and information needed for public health and safety will be updated with limited support. Additionally, USGS will not be able to respond to inquiries until appropriations are enacted.  For more information, please see www.doi.gov/shutdown

National Hydrography


Find the resources you need to understand National Hydrography



Several tools are provided to assist with updating and using the NHD, WBD, and NHDPlus HR.

Explore Tools



The National Hydrography Dataset newsletters keep the National Hydrography community apprised of recent developments and news. Read or contribute to it today!


Additional User Resources

Can't find a resource you need? Contact nhd@usgs.gov

Hydrography Seminar Series

Fact Sheet: National Hydrography Dataset—Linear Referencing


National Hydrography Support

Support for NHD, WBD, & NHDPlus HR
National Geospatial Program (NGP)