USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 4 - 0807 (published 20201201)

Metadata Updated: March 27, 2021

The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water bodies. Reaches are also defined on waterbodies and the approximate shorelines of the Great Lakes, the Atlantic and Pacific Oceans and the Gulf of Mexico. The NHD also incorporates the National Spatial Data Infrastructure framework criteria established by the Federal Geographic Data Committee.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.


This dataset is part of the following collection:

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Metadata Date March 25, 2021
Metadata Created Date January 6, 2021
Metadata Updated Date March 27, 2021
Reference Date(s) December 1, 2020 (publication)
Frequency Of Update irregular

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Additional Metadata

Resource Type Dataset
Metadata Date March 25, 2021
Metadata Created Date January 6, 2021
Metadata Updated Date March 27, 2021
Reference Date(s) December 1, 2020 (publication)
Responsible Party U.S. Geological Survey, National Geospatial Technical Operations Center (Point of Contact)
Contact Email
Access Constraints Use Constraints: None. However, users should be aware that temporal changes may have occurred since this data set was collected and that some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. Acknowledgment of the U.S. Geological Survey would be appreciated for products derived from these data., Access Constraints: None
Bbox East Long -90.1742461379999
Bbox North Lat 31.441353013
Bbox South Lat 29.976078865
Bbox West Long -91.6843210279999
Collection Package Id fde08ac7-a847-4adf-8336-58425e75d789
Coupled Resource
Frequency Of Update irregular
Graphic Preview Description Thumbnail JPG image
Graphic Preview File
Graphic Preview Type JPEG
Licence No liability for content or accuracy is presumed by USGS for data.
Metadata Language eng; USA
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-91.684321028, 29.976078865], [-90.174246138, 29.976078865], [-90.174246138, 31.441353013], [-91.684321028, 31.441353013], [-91.684321028, 29.976078865]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1988-01-01
Temporal Extent End 2012-01-01

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