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

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.

Data e Risorse

Campo Valore
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
contact-email Kunkoski.Don@epamail.epa.gov
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2015-04-14"}]
frequency-of-update annually
licence ["https://edg.epa.gov/EPA_Data_License.htm"]
licence_url https://edg.epa.gov/EPA_Data_License.htm
metadata-date 2021-06-30
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
resource-type dataset
responsible-party [{"name": "US EPA Headquarters", "roles": ["pointOfContact"]}]
spatial {"type": "Polygon", "coordinates": [[[-123.0, 27.0], [-68.0, 27.0], [-68.0, 49.0], [-123.0, 49.0], [-123.0, 27.0]]]}
spatial_harvester true
temporal-extent-begin 2004-01-01
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • amerigeo
  • amerigeoss
  • ckan
  • epa
  • geo
  • geoss
  • grant-reporting-tracking-system
  • grts
  • map-service
  • national
  • nonpoint-source
  • north-america
  • united-states
  • us
  • waters10
isopen False
metadata_created 2025-11-21T05:12:41.054864
metadata_modified 2025-11-21T05:12:41.054868
notes 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.
num_resources 7
num_tags 15
title EPA Office of Water (OW): Nonpoint Source Projects NHDPlus Indexed Dataset