@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/2f8f13a7-12fc-418e-919a-7564f515ba89> a dcat:Dataset ;
    dct:description "This data release documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in the North Delta in the Sacramento-San Joaquin River Delta of California, USA. The data set includes nitrate, ammonium, phosphate, dissolved organic carbon, temperature, conductivity, dissolved oxygen, turbidity, and chlorophyll . Data-collection cruises were conducted under three different environmental/flow conditions in August, September, and October 2018 that coincided with conditions prior to, during, and following a directed flow action or pulse of agricultural return water organized by the California Department of Water Resources and California Natural Resources Agency ." ;
    dct:identifier "USGS:5e7ceb88e4b01d5092751c18" ;
    dct:issued "2025-11-20T18:34:51.718038"^^xsd:dateTime ;
    dct:modified "20210915"^^xsd:gYear ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-121.7917 38.0762, -121.7917 38.3524, -121.5884 38.3524, -121.5884 38.0762, -121.7917 38.0762))"^^gsp:wktLiteral ] ;
    dct:title "Assessment of water-quality in the California Sacramento-San Joaquin Delta during a North Delta directed flow action: August - October 2018 (ver. 2.0, September 2021)" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Elizabeth B. Stumpner" ;
            vcard:hasEmail <mailto:estumpner@usgs.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/2f8f13a7-12fc-418e-919a-7564f515ba89/resource/1b6ab390-7429-4210-adc5-45181163767b>,
        <https://data.amerigeoss.org/dataset/2f8f13a7-12fc-418e-919a-7564f515ba89/resource/ed348ded-2f66-4b01-b169-c12298225ecc> ;
    dcat:keyword "amerigeo",
        "amerigeoss",
        "biogeochemistry",
        "biota",
        "california",
        "central-valley",
        "ckan",
        "delta",
        "directed-flow-action",
        "drinking-water-use",
        "environment",
        "geo",
        "geoss",
        "high-frequency",
        "high-resolution",
        "hydrogeology",
        "inlandwaters",
        "liberty-island",
        "national",
        "north-america",
        "nutrient-content-water",
        "nutrients",
        "phytoplankton",
        "public-supply-water-use",
        "real-time",
        "sacramento-river",
        "sacramento-san-joaquin-delta",
        "statistical-analysis",
        "united-states",
        "usgs-5e7ceb88e4b01d5092751c18",
        "visualization-methods",
        "water-quality" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/2f8f13a7-12fc-418e-919a-7564f515ba89/resource/1b6ab390-7429-4210-adc5-45181163767b> a dcat:Distribution ;
    dct:description "The metadata original format" ;
    dct:format "XML" ;
    dct:issued "2022-07-28T20:03:08.852994"^^xsd:dateTime ;
    dct:modified "2025-11-20T18:34:51.702261"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://data.usgs.gov/datacatalog/metadata/USGS.5e7ceb88e4b01d5092751c18.xml> ;
    dcat:mediaType "text/xml" .

<https://data.amerigeoss.org/dataset/2f8f13a7-12fc-418e-919a-7564f515ba89/resource/ed348ded-2f66-4b01-b169-c12298225ecc> a dcat:Distribution ;
    dct:description "Landing page for access to the data" ;
    dct:format "XML" ;
    dct:issued "2022-07-28T20:03:08.853005"^^xsd:dateTime ;
    dct:modified "2025-11-20T18:34:51.702665"^^xsd:dateTime ;
    dct:title "Digital Data" ;
    dcat:accessURL <https://doi.org/10.5066/P9EFDWZP> ;
    dcat:mediaType "application/http" .

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