HIFLD OPEN Flowline - Large Scale

Principal Investigator(s):  View help for Principal Investigator(s) United States Department of Homeland Security; U.S. Geological Survey (USGS)

Version:  View help for Version V1

Name File Type Size Last Modified
flowline-large-scale-2-file_geodatabase.zip application/zip 9.9 GB 11/11/2025 09:22:AM
metadata.html text/html 1.2 KB 11/11/2025 08:46:AM
metadata.xml application/xml 1.4 KB 11/11/2025 08:43:AM

Project Citation: 

United States Department of Homeland Security, and U.S. Geological Survey (USGS). HIFLD OPEN Flowline - Large Scale. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2025-11-11. https://doi.org/10.3886/E240110V1

Project Description

Project Title:  View help for Project Title HIFLD OPEN Flowline - Large Scale
Summary:  View help for Summary Please use 3DHP for updated data The USGS National Hydrography Dataset (NHD) service from The National Map 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 is available nationwide in two seamless datasets, one based on 1:24,000 (or larger) scale and referred to as high resolution NHD, and the other based on 1:100,000 scale and referred to as medium resolution NHD. The NHD from The National Map supports many applications, such as making maps, geocoding observations, flow modeling, data maintenance, and stewardship. The NHD is commonly combined with other data themes, such as boundaries, elevation, structures, and transportation, to produce general reference base maps.

The National Map download client allows free downloads of public domain NHD data in either Esri File Geodatabase or Shapefile formats. For additional information on the NHD, go to https://www.usgs.gov/national-hydrography/national-hydrography-dataset. See https://apps.nationalmap.gov/help/ for assistance with The National Map viewer, download client, services, or metadata.  Data Refreshed January, 2024.
Original Distribution URL:  View help for Original Distribution URL https://hifld-geoplatform.hub.arcgis.com/

Scope of Project

Subject Terms:  View help for Subject Terms hydrography; drainage; watershed; basin; HIFLD Open; GIS
Geographic Coverage:  View help for Geographic Coverage United States
Time Period(s):  View help for Time Period(s) 7/3/2025 – 7/3/2025
Data Type(s):  View help for Data Type(s) geographic information system (GIS) data
Collection Notes:  View help for Collection Notes Archived from the HIFLD Open GIS data repository, which was deactivated on August 26, 2025.


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V1 [2025-11-11]

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