User Resources Overview
User guide for the NHD.
This Document explains the features, tables, and relationship classes that come with the National Hydrography Dataset (NHD) and Watershed Boundary Dataset (WBD).
Descriptions of the rules for how features are mapped with regards to adjacent features in the NHD.
Diagram of the tables, the table items, the item definitions, and the relationships between the tables in the NHD HR data model.
Diagram of the tables, the table items, the item definitions, and the relationships between the tables in the WBD data model.
An informative description of how scientists store and link information to the NHD using a relational data design.
Access GNIS to check, submit new, or make changes to names in GNIS.
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