USGS National Hydrography Dataset (NHD) Best Resolution HU4-8 20180301 for HU-4 Subregion FileGDB 10.1 Model Version 2.2.1

Metadata Updated: March 8, 2018

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.

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Metadata Date March 2, 2018
Metadata Created Date December 19, 2017
Metadata Updated Date March 8, 2018
Reference Date(s) March 1, 2018 (publication)
Frequency Of Update irregular

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Additional Metadata

Resource Type Dataset
Metadata Date March 2, 2018
Metadata Created Date December 19, 2017
Metadata Updated Date March 8, 2018
Reference Date(s) March 1, 2018 (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be aware that temporal changes may have occurred since this data set was collected and that some parts of this data may no longer represent actual surface conditions.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 -114.636400494
Bbox North Lat 45.258266093
Bbox South Lat 41.127826171
Bbox West Long -118.850672738
Collection Package Id e6482162-4491-482b-b9dd-adb0b0a1141f
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
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2000-07-19
Temporal Extent End 2017-12-28

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