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2 datasets

National Hydrography Data - NHD and 3DHP

Published by: California Department of Water Resources
Last updated: Tuesday, May 19, 2026
File types: WEBSITE, ARCGIS GEOSERVICES REST API, PDF, ZIP, CSV

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

Hydrography Presentations

Published by: California Department of Water Resources
Last updated: Tuesday, May 19, 2026
File types: PDF, WEB VIDEOS

Slides, handouts, and recordings that have been presented at various conferences, workshops, and webinars by the California National Hydrography Stewa...