@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix gsp: <http://www.opengis.net/ont/geosparql#> .
@prefix locn: <http://www.w3.org/ns/locn#> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.amerigeoss.org/dataset/5d2d5201-814d-40c4-93ed-3e4f4bd38683> a dcat:Dataset ;
    dct:description """This tabular data set represents the average normalized (wet) deposition, in kilograms per square 
kilometer multiplied by 100, of ammonium (NH4) for the year 2002 compiled for every MRB_E2RF1 
catchment of the Major River Basins (MRBs, Crawford and others, 2006). Estimates of NH4 deposition 
are based on National Atmospheric Deposition Program (NADP) measurements (B. Larsen, U.S. 
Geological Survey, written. commun., 2007). De-trending methods applied to the year 2002 are 
described in Alexander and others, 2001. NADP site selection met the following criteria: stations 
must have records from 1995 to 2002 and have a minimum of 30 observations.
		
The MRB_E2RF1 catchments are based on a modified version of the U.S. Environmental Protection 
Agency's (USEPA) ERF1_2 and include enhancements to support national and regional-scale 
surface-water quality modeling (Nolan and others, 2002; Brakebill and others, 2011).
		
Data were compiled for every MRB_E2RF1 catchment for the conterminous United States covering 
New England and Mid-Atlantic (MRB1), South Atlantic-Gulf and Tennessee (MRB2), the Great Lakes, 
Ohio, Upper Mississippi, and Souris-Red-Rainy (MRB3), the Missouri (MRB4), the Lower Mississippi, 
Arkansas-White-Red, and Texas-Gulf (MRB5), the Rio Grande, Colorado, and the Great basin (MRB6), 
the Pacific Northwest (MRB7) river basins, and California (MRB8).""" ;
    dct:identifier "USGS:48087977-35c5-4918-8044-18176eef3a28" ;
    dct:issued "2025-11-22T00:44:14.083698"^^xsd:dateTime ;
    dct:modified "20201117"^^xsd:gYear ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-127.9108 23.2435, -127.9108 51.6574, -65.3278 51.6574, -65.3278 23.2435, -127.9108 23.2435))"^^gsp:wktLiteral ] ;
    dct:title "Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous United States: Normalized Atmospheric Deposition for 2002, Ammonium (NH4)" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Michael E. Wieczorek" ;
            vcard:hasEmail <mailto:mewieczo@usgs.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/5d2d5201-814d-40c4-93ed-3e4f4bd38683/resource/1c9f0811-b5bc-419a-b07c-f6195ed3d840>,
        <https://data.amerigeoss.org/dataset/5d2d5201-814d-40c4-93ed-3e4f4bd38683/resource/87116dac-820f-4bb5-8ae1-ff0831456d5d> ;
    dcat:keyword "amerigeo",
        "amerigeoss",
        "ammonium-nh4",
        "cali",
        "california",
        "catchment",
        "ckan",
        "cogb",
        "conterminous-united-states",
        "environment",
        "geo",
        "geoscientificinformation",
        "geoss",
        "glmr",
        "great-lakes-ohio-upper-mississippi-and-souris-red-rainy",
        "inlandwaters",
        "lmtg",
        "lower-mississippi-arkansas-white-red-and-texas-gulf",
        "major-river-basins",
        "missouri",
        "mori",
        "mrb",
        "mrb1",
        "mrb2",
        "mrb3",
        "mrb4",
        "mrb5",
        "mrb6",
        "mrb7",
        "mrb8",
        "mrbe2rf1",
        "mrbe2rf1ws",
        "national",
        "nawqa",
        "nema",
        "new-england-and-mid-atlantic",
        "north-america",
        "pacific-northwest",
        "panw",
        "rio-grande-colorado-and-great-basin",
        "sagt",
        "south-atlantic-gulf-and-tennessee",
        "sparrow",
        "united-states",
        "usgs-48087977-35c5-4918-8044-18176eef3a28" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/5d2d5201-814d-40c4-93ed-3e4f4bd38683/resource/1c9f0811-b5bc-419a-b07c-f6195ed3d840> a dcat:Distribution ;
    dct:description "The metadata original format" ;
    dct:format "XML" ;
    dct:issued "2022-08-07T09:51:01.142777"^^xsd:dateTime ;
    dct:modified "2025-11-22T00:44:14.062049"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://data.usgs.gov/datacatalog/metadata/USGS.48087977-35c5-4918-8044-18176eef3a28.xml> ;
    dcat:mediaType "text/xml" .

<https://data.amerigeoss.org/dataset/5d2d5201-814d-40c4-93ed-3e4f4bd38683/resource/87116dac-820f-4bb5-8ae1-ff0831456d5d> a dcat:Distribution ;
    dct:description "Landing page for access to the data" ;
    dct:format "XML" ;
    dct:issued "2022-08-07T09:51:01.142783"^^xsd:dateTime ;
    dct:modified "2025-11-22T00:44:14.062474"^^xsd:dateTime ;
    dct:title "Digital Data" ;
    dcat:accessURL <https://water.usgs.gov/lookup/getspatial?mrb_e2rf1_nh4> ;
    dcat:mediaType "application/http" .

<https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> a foaf:Agent ;
    foaf:name "US Migrating" .