@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/738cb52e-62c5-4d90-b414-db3102bf7202> a dcat:Dataset ;
    dct:description """The datasets provided here are the input data used to run the Seasonal Kendall Trend (SKT) tests and Weighted Regressions on Time, Discharge, and Season (WRTDS) models. SKT tests use "annualSamplingFreqs_allSites.csv" and "wqData_screenedSitesAll.csv" which includes, for all site-parameter combinations, information on annual sampling frequencies and the screened water-quality data, respectively. 
The WRTDS models use "DRB.wqdata.20200521.csv", "DRB.flow.20200610.zip", and "DRB.info.20200521.csv" for calibration which includes, for all site-parameter combinations, the water-quality data, streamflow data (as separate .csv files for each site), model specifications and site information, respectively. The multisource data used in these analyses are from Shoda and others (2019), which were originally retrieved from the Water Quality Portal (www.waterqualitydata.us).
References Cited:
Shoda, M.E., Murphy, J.C., Falcone, J.A., and Duris, J.W., 2019, Multisource surface-water-quality data and U.S. Geological Survey streamgage match for the Delaware River Basin: U.S. Geological Survey data release, https://doi.org/10.5066/P9PX8LZO.
National Water Quality Monitoring Council, Water Quality Portal (WQP), https://www.waterqualitydata.us/. Accessed 2020-11-03.""" ;
    dct:identifier "USGS:5eeba66782ce3bd58d882a9f" ;
    dct:issued "2025-11-22T16:50:48.894966"^^xsd:dateTime ;
    dct:modified "20201203"^^xsd:gYear ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-76.7285 38.3589, -76.7285 42.6663, -73.7183 42.6663, -73.7183 38.3589, -76.7285 38.3589))"^^gsp:wktLiteral ] ;
    dct:title "Water-quality trends for rivers and streams in the Delaware River Basin using Weighted Regressions on Time, Discharge, and Season (WRTDS) models, Seasonal Kendall Trend (SKT) tests, and multisource data, Water Year 1978-2018 (input data)" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Jennifer C Murphy Blair" ;
            vcard:hasEmail <mailto:jmurphy@usgs.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/738cb52e-62c5-4d90-b414-db3102bf7202/resource/42e7bf9d-392f-473b-8a3d-d8a70b2318b4>,
        <https://data.amerigeoss.org/dataset/738cb52e-62c5-4d90-b414-db3102bf7202/resource/c7d64b8a-b7e1-4e76-947e-37e4690f5026> ;
    dcat:keyword "amerigeo",
        "amerigeoss",
        "ammonia",
        "calcium",
        "chloride",
        "ckan",
        "delaware",
        "delaware-river",
        "environment",
        "geo",
        "geoss",
        "magnesium",
        "major-ions",
        "maryland",
        "national",
        "new-jersey",
        "new-york",
        "nitrate",
        "north-america",
        "nutrient-content-water",
        "orthophosphate-filtered",
        "orthophosphate-unfiltered",
        "pennsylvania",
        "potassium",
        "salinity",
        "seasonal-kendall-trend-test-skt",
        "sodium",
        "specific-conductance",
        "sulfate",
        "suspended-material-water",
        "suspended-sediment-concentration",
        "total-dissolved-solids",
        "total-nitrogen",
        "total-phosphorus",
        "total-suspended-solids",
        "united-states",
        "usgs-5eeba66782ce3bd58d882a9f",
        "weighted-regressions-on-time-discharge-and-season-wrtds" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/738cb52e-62c5-4d90-b414-db3102bf7202/resource/42e7bf9d-392f-473b-8a3d-d8a70b2318b4> a dcat:Distribution ;
    dct:description "Landing page for access to the data" ;
    dct:format "XML" ;
    dct:issued "2022-08-06T21:46:49.327585"^^xsd:dateTime ;
    dct:modified "2025-11-22T16:50:48.875965"^^xsd:dateTime ;
    dct:title "Digital Data" ;
    dcat:accessURL <https://doi.org/10.5066/P9KMWNJ5> ;
    dcat:mediaType "application/http" .

<https://data.amerigeoss.org/dataset/738cb52e-62c5-4d90-b414-db3102bf7202/resource/c7d64b8a-b7e1-4e76-947e-37e4690f5026> a dcat:Distribution ;
    dct:description "The metadata original format" ;
    dct:format "XML" ;
    dct:issued "2022-08-06T21:46:49.327579"^^xsd:dateTime ;
    dct:modified "2025-11-22T16:50:48.875519"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://data.usgs.gov/datacatalog/metadata/USGS.5eeba66782ce3bd58d882a9f.xml> ;
    dcat:mediaType "text/xml" .

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