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National Hydrography Data - NHD and 3DHP

  • Published by: California Department of Water Resources
  • Last updated: Sunday, June 14, 2026
  • File types: HTML, ARCGIS GEOSERVICES REST API

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

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