NHD/ WBD Program Documentation
Diagram of the tables, the table items, the item definitions, and the relationships between the tables in the NHDinGEO data model.
Diagram of the tables, the table items, the item definitions, and the relationships between the tables in the WBD data model.
A brief summary of the history and characteristics of the NHD, with additional information concerning obtaining, and maintaining the NHD.
An informative description of how scientists store and link information to the NHD using a relational data design.
Defines features, feature attributes, attribute values, delineation, representation rules, and data extraction for the National Hydrography Dataset-High Resolution (NHD-HR) at scales at 1:100,000 or larger.
This document contains standards and specifications for WBD data. It also includes discussion of objectives, communications required for revising the data resolution in the United States and the Caribbean, as well as final review and data-quality criteria.
Access GNIS to check, submit new, or make changes to names in GNIS.
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