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@prefix datacite: <> .
@prefix dcterms: <> .
@prefix xsd: <> .
@prefix dwc: <> .
@prefix gcis: <> .
@prefix cito: <> .
@prefix dcat: <> .
@prefix prov: <> .
@prefix skos: <> .
@prefix rdf: <> .
@prefix biro: <> .

   datacite:identifier "epa-enviroatlas-303d-impairments-by-12-digit-huc-for-the-conterminous-united-states";
   dcterms:title "EnviroAtlas - 303(d) Impairments by 12-digit HUC for the Conterminous United States"^^xsd:string;
   datacite:hasIdentifier [ a datacite:AlternateResourceIdentifier; rdf:value "" ] ;
   dcat:landingPage <>;
   dcterms:description "This EnviroAtlas dataset contains the total length in kilometers of streams, coastlines, canals, and other linear hydrographic features from the National Hydrography Dataset (NHD) per 12-digit Hydrologic Unit (HUC); the total length of features that have listed 303(d) impairments for biota, metals, nutrients, fish, habitat, temperature, pollution, or other impairments; and the ratio of stream length to 12-digit HUC area, or stream density. This dataset was produced by the US EPA to support research and online mapping activities related to EnviroAtlas. EnviroAtlas ( allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the contiguous United States. The dataset is available as downloadable data ( or as an EnviroAtlas map service. Additional descriptive information about each attribute in this dataset can be found in its associated EnviroAtlas Fact Sheet ("^^xsd:string;
## Dates of dataset release and access

## Spatial and temporal information:
dcterms:spatial [
    a dcterms:Location, gcis:SpatialExtent;
    gcis:northBoundLatitude "51.6773602"^^xsd:float;
    gcis:southBoundLatitude "22.7348894"^^xsd:float;
    gcis:eastBoundLongitude "-65.20336449"^^xsd:float;
    gcis:westBoundLongitude "-128.02839229"^^xsd:float;
  ] ;
dcterms:temporal [
    a dcterms:PeriodOfTime, gcis:TemporalExtent;
    ] ;

## Attributes and keywords

## Instrument Instances

   a gcis:Dataset .

## This entity was produced by an organization:     
   prov:qualifiedAttribution [
      a prov:Attribution;
      prov:agent <>;
      prov:hadRole <>;
      ] .

## Also known as:
   skos:altLabel "2315695e-e092-4b62-a899-a2ef0b5af326";
   gcis:hasURL "";
   skos:exactMatch <> .
   skos:altLabel "enviroatlas-303d-impairments-by-12-digit-huc-for-the-conterminous-united-states";
   gcis:hasURL "";
   skos:exactMatch <> .