National Hydrography Data - NHD and 3DHP

• Published by: California Department of Water Resources
• Last updated: Tuesday, April 8, 2025
• File types: ZIP, WEBSITE, ARCGIS GEOSERVICES REST API, PDF, CSV

The USGS National Hydrography Dataset (NHD) Downloadable Data Collection from The National Map (TNM) is a comprehensive set of digital spatial data th...