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EPA Office of Water (OW): Nonpoint Source Projects NHDPlus Indexed Dataset

Metadata Updated: August 30, 2023

GRTS locational data for nonpoint source projects. GRTS locations are coded onto NHDPlus v2.1 flowline features to create point and line events or coded onto NHDPlus v2.1 waterbody features to create area events. In addition to NHDPlus reach indexed data there may also be custom events (point, line or area) that are not associated with NHD and are in an EPA standard format that is compatible with EPA's Reach Address Database. Custom events are used to represent GRTS locations that are not represented well in NHDPlus.

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.

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Metadata Date April 14, 2015
Metadata Created Date August 30, 2023
Metadata Updated Date August 30, 2023
Reference Date(s) April 14, 2015 (publication)
Frequency Of Update annually

Metadata Source

Harvested from Environmental Dataset Gateway ISO Geospatial Metadata

Additional Metadata

Resource Type Dataset
Metadata Date April 14, 2015
Metadata Created Date August 30, 2023
Metadata Updated Date August 30, 2023
Reference Date(s) April 14, 2015 (publication)
Responsible Party US EPA Headquarters (Point of Contact)
Contact Email
Guid {ACFE9920-1147-23CF-2017-23B3CBFED562}
Access Constraints Use Constraints: None. Please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the most recent copy of both data and metadata. While EPA has used its best efforts to include complete and accurate information in this system, EPA cannot be held responsible for errors or omissions and is not liable for any direct, indirect or consequential damages resulting from using this information. Reliance on the information contained in this system by any party cannot be used as a defense in any administrative or judicial proceeding. In such proceedings, the specific language of the relevant regulation or statute is binding. Acknowledgement of the EPA would be appreciated., Access Constraints: None
Bbox East Long -68
Bbox North Lat 49
Bbox South Lat 27
Bbox West Long -123
Coupled Resource
Frequency Of Update annually
Harvest Object Id 01321ac4-d644-4846-9c2c-55e7d5b63272
Harvest Source Id 9b3cd81e-5515-4bb7-ad3c-5ae44de9b4bd
Harvest Source Title Environmental Dataset Gateway ISO Geospatial Metadata
Licence Url
Lineage This lineage was generated by the FGDC CSDGM to 19139 transformation
Metadata Language eng; USA
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-123.0, 27.0], [-68.0, 27.0], [-68.0, 49.0], [-123.0, 49.0], [-123.0, 27.0]]]}
Progress underDevelopment
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2004-01-01

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