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National Hydrography Data - NHD and 3DHP
The USGS National Hydrography Dataset (NHD) Downloadable Data Collection from The National Map (TNM) is a comprehensive set of digital spatial data that encodes information... -
Watershed Boundary Dataset (WBD)
The Watershed Boundary Dataset (WBD) from The National Map (TNM) defines the perimeter of drainage areas formed by the terrain and other landscape characteristics. The drainage... -
National Hydrography Dataset (NHD) Archive
This page is meant to act as an archival repository for previous versions of the statewide National Hydrography Dataset (NHD) which includes the Watershed Boundary Dataset (WBD)... -
Wild and Scenic Rivers, California State Designations Only, 2020
California Public Resources Code, Chapter 1.4. California Wild and Scenic Rivers Act, Section 5093.50. It is the policy of the State of California that certain rivers which...