NHD Major Rivers, Major Rivers and Creeks, Major Lakes and Reservoirs

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 about naturally occurring and constructed bodies of surface water (lakes, ponds, and reservoirs), paths through which water flows (canals, ditches, streams, and rivers), and related entities such as point features (springs, wells, stream gages, and dams). The information encoded about these features includes classification and other characteristics, delineation, geographic name, position and related measures, a "reach code" through which other information can be related to the NHD, and the direction of water flow. The network of reach codes delineating water and transported material flow allows users to trace movement in upstream and downstream directions. In addition to this geographic information, the dataset contains metadata that supports the exchange of future updates and improvements to the data. The NHD supports many applications, such as making maps, geocoding observations, flow modeling, data maintenance, and stewardship. For additional information on NHD, go to https://www.usgs.gov/core-science-systems/ngp/national-hydrography.

DWR is the steward for NHD and Watershed Boundary Dataset (WBD) in California. We work with other organizations to edit and improve NHD and WBD, using the business rules for California. This is a process that takes time with a State as large and diverse as California. California's NHD improvements are sent to USGS, and accessible from their website.

This page only features the NHD Major Rivers, Major Rivers and Creeks, and Major Lakes and Reservoirs derivative products. For a comprehensive list of NHD resources, go to this page: https://data.cnra.ca.gov/dataset/national-hydrography-dataset-nhd

Data e Risorse

Campo Valore
accessLevel public
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier 7db4918e-3127-496c-ad5e-f2fc536222b1
issued 2022-04-12T22:23:34.001424
modified 2022-07-11T18:47:08.153238
publisher California Department of Water Resources
resource-type Dataset
source_datajson_identifier true
source_hash d2f8f59b8f6b6659f6214a6ec4611f32c9720285
source_schema_version 1.1
theme {"Natural Resources",Water}
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • amerigeo
  • amerigeoss
  • ca
  • california
  • california-department-of-water-resources
  • cartography
  • ckan
  • creeks
  • flowlines
  • ftype
  • geo
  • geoss
  • huc
  • hucs
  • hydrography
  • hydrology
  • lakes
  • major-creeks
  • major-lakes
  • major-lakes-and-reservoirs
  • major-reservoirs
  • major-rivers
  • major-rivers-and-creeks
  • national
  • national-hydrography-dataset
  • nhd
  • north-america
  • reservoirs
  • rivers
  • services
  • statewide
  • streams
  • united-states
  • usgs
  • water-basins
  • waterbodies
  • watershed
  • waterways
isopen False
license_id notspecified
license_title License not specified
maintainer Jane Schafer-Kramer
maintainer_email Jane.Schafer-Kramer@water.ca.gov
metadata_created 2025-11-22T21:21:47.489419
metadata_modified 2025-11-22T21:21:47.489424
notes 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 about naturally occurring and constructed bodies of surface water (lakes, ponds, and reservoirs), paths through which water flows (canals, ditches, streams, and rivers), and related entities such as point features (springs, wells, stream gages, and dams). The information encoded about these features includes classification and other characteristics, delineation, geographic name, position and related measures, a "reach code" through which other information can be related to the NHD, and the direction of water flow. The network of reach codes delineating water and transported material flow allows users to trace movement in upstream and downstream directions. In addition to this geographic information, the dataset contains metadata that supports the exchange of future updates and improvements to the data. The NHD supports many applications, such as making maps, geocoding observations, flow modeling, data maintenance, and stewardship. For additional information on NHD, go to https://www.usgs.gov/core-science-systems/ngp/national-hydrography. DWR is the steward for NHD and Watershed Boundary Dataset (WBD) in California. We work with other organizations to edit and improve NHD and WBD, using the business rules for California. This is a process that takes time with a State as large and diverse as California. California's NHD improvements are sent to USGS, and accessible from their website. This page only features the NHD Major Rivers, Major Rivers and Creeks, and Major Lakes and Reservoirs derivative products. For a comprehensive list of NHD resources, go to this page: https://data.cnra.ca.gov/dataset/national-hydrography-dataset-nhd
num_resources 7
num_tags 38
title NHD Major Rivers, Major Rivers and Creeks, Major Lakes and Reservoirs