@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/32cdcb2c-0816-4ff6-8cbe-fc251a5f8506> a dcat:Dataset ;
    dct:description """This digital geospatial data set contains the locations, values, and uncertainties of hydraulic-head 
observations used in the calibration of the transient model of the Death Valley regional ground-water 
flow system (DVRFS). The hydraulic-head observations were developed by compositing one or more 
water-levels measured in wells throughout the DVRFS model domain, a 45,000 square-kilometer 
region of southern Nevada and California. To develop hydraulic-head observations, nearly all available 
water levels for the DVRFS region through 2004 were compiled in Ground-Water Site Inventory (GWSI), 
the ground-water component of the U.S. Geological Survey (USGS) National Water Information System 
(NWIS) database. Water levels suitable for developing hydraulic-head observations representative of 
regional, steady-state (pre-pumping) and transient (affected by pumping) ground-water flow conditions 
were identified through analyses. The resulting water levels were averaged by year and for each well to 
produce 4,899 hydraulic-head observation values at 868 wells. The uncertainty of each hydraulic-head 
observation was statistically quantified from the values of uncertainties associated with well altitude 
and location, nonsimulated transient stress, measurement accuracy, model discretization, and 
pumpage estimates.""" ;
    dct:identifier <http://datainventory.doi.gov/id/dataset/usgs-a025061b-8253-4cde-8b55-827c7ac26515> ;
    dct:issued "2025-09-24T23:19:21.894426"^^xsd:dateTime ;
    dct:modified "2020-11-17T00:00:00+00:00"^^xsd:dateTime ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-117.1910 35.6353, -117.1910 37.9053, -115.1749 37.9053, -115.1749 35.6353, -117.1910 35.6353))"^^gsp:wktLiteral ] ;
    dct:title "Locations, values, and uncertainties of hydraulic-head observations for the transient ground-water flow model, Death Valley regional ground-water flow system, Nevada and California" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Randell J. Laczniak" ;
            vcard:hasEmail <mailto:rlaczni@usgs.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/32cdcb2c-0816-4ff6-8cbe-fc251a5f8506/resource/30155866-c3d9-4fdc-bf18-9029d6c0ecfb>,
        <https://data.amerigeoss.org/dataset/32cdcb2c-0816-4ff6-8cbe-fc251a5f8506/resource/ab02f490-23cc-4872-8e34-25a182db4766> ;
    dcat:keyword "AmeriGEO",
        "AmeriGEOSS",
        "CKAN",
        "GEO",
        "GEOSS",
        "National",
        "North America",
        "United States",
        "amargosa-desert",
        "ash-meadows",
        "california",
        "california-valley",
        "chicago-valley",
        "china-ranch",
        "clark-county",
        "clayton-valley",
        "coal-valley",
        "death-valley",
        "death-valley-regional-ground-water-flow-system",
        "esmeralda-county",
        "eureka-valley",
        "flow-model",
        "franklin-lake",
        "franklin-well",
        "garden-valley",
        "ground-water",
        "ground-water-pumping",
        "hydraulic-head",
        "hydraulic-head-observation",
        "hydrology",
        "inyo-county",
        "kern-county",
        "las-vegas-valley",
        "lincoln-county",
        "mesquite-valley",
        "mineral-county",
        "modflow-2000",
        "mono-county",
        "nevada",
        "nevada-test-site",
        "nye-county",
        "oasis-valley",
        "observation-uncertainty",
        "owlshead-mountains",
        "pahranagat-range",
        "pahrump-valley",
        "panamint-range",
        "penoyer-valley",
        "railroad-valley",
        "resting-spring",
        "saline-valley",
        "san-bernadino-county",
        "sarcobatus-flat",
        "sheep-range",
        "shoshone",
        "silurian-valley",
        "southern-nevada",
        "spring-mountains",
        "steady-state-ground-water-model",
        "steady-state-hydraulic-head-observation",
        "stewart-valley",
        "stone-cabin-valley",
        "tecopa",
        "transient-ground-water-model",
        "transient-hydraulic-head-observation",
        "usgs-a025061b-8253-4cde-8b55-827c7ac26515",
        "water-level",
        "water-well",
        "yucca-mountain" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/32cdcb2c-0816-4ff6-8cbe-fc251a5f8506/resource/30155866-c3d9-4fdc-bf18-9029d6c0ecfb> a dcat:Distribution ;
    dct:description "The metadata original format" ;
    dct:format "XML" ;
    dct:issued "2025-09-16T01:11:16.125630"^^xsd:dateTime ;
    dct:modified "2025-09-24T23:19:21.828432"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://data.usgs.gov/datacatalog/metadata/USGS.a025061b-8253-4cde-8b55-827c7ac26515.xml> ;
    dcat:mediaType "text/xml" .

<https://data.amerigeoss.org/dataset/32cdcb2c-0816-4ff6-8cbe-fc251a5f8506/resource/ab02f490-23cc-4872-8e34-25a182db4766> a dcat:Distribution ;
    dct:description "Landing page for access to the data" ;
    dct:format "XML" ;
    dct:issued "2025-09-13T08:15:51.627409"^^xsd:dateTime ;
    dct:modified "2025-09-24T23:19:21.827142"^^xsd:dateTime ;
    dct:title "Digital Data" ;
    dcat:accessURL <https://doi.org/10.5066/P9GYLM8D> ;
    dcat:mediaType "application/http" .

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