@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/69024fbe-2557-4e0d-b069-6ce5e7b8388a> a dcat:Dataset ;
    dct:description """An updated three-dimensional, groundwater-flow and chloride-transport model (SEAWAT) 
of the Southern Hills regional aquifer system in southeastern Louisiana and southwestern 
Mississippi was developed to examine the effects of groundwater withdrawals on the rate 
and pathways of saltwater migration in the “1,500-foot” sand, “2,400-foot” sand, and 
“2,800-foot” sand.  New interpretations of stratigraphic correlations amongst geophysical 
well logs were utilized to revise a hydrogeologic-framework that delineates the depth and 
thickness variations of aquifers and confining units in the Southern Hills regional aquifer 
system. Regional groundwater flow throughout the Southern Hills regional aquifer system 
was first simulated with MODFLOW, and flow-model parameters were calibrated to 8,810 
water levels observed through 2016 with the parameter-estimation code PEST++. Saltwater 
transport was subsequently simulated for the “1,500-foot” sand, “2,400-foot” sand, and 
“2,800-foot” sand with the variable-density code, SEAWAT. Chloride-concentration 
measurements were used as a proxy for the saltwater to formulate the concentration 
initial conditions and calibrate the transport-model parameters. Three hypothetical 
groundwater management scenarios are included in the archive. These scenarios 
simulate the future water levels and chloride concentrations within the “1,500-foot” 
sand, “2,400-foot” sand, and “2,800-foot” sand if groundwater withdrawals were to 
continue at 2016 rates or if one of two proposed modifications to the 2016 withdrawals 
from the “1,500-foot” sand or “2,800-foot” sand were to be enacted. The model was 
calibrated to water levels measured in aquifers beneath the “400-foot” sand, and water 
levels simulated in these aquifers could be used for various purposes, including predicting 
the effects of changing pumping rates. Water planners and managers need additional 
knowledge about the effects of groundwater withdrawals on the rate and pathways of 
saltwater migration and a tool to assess possible management strategies that could 
control further saltwater encroachment in the Baton Rouge area. This USGS data release 
contains all of the input and output files for the simulations described in the associated 
model documentation report (https://doi.org/10.3133/sir20195102).""" ;
    dct:identifier "USGS:047b61a0-31c1-486b-b92c-620fb841723e" ;
    dct:issued "2025-11-22T09:55:10.436259"^^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 ((-91.9159 30.2429, -91.9159 31.3376, -90.4476 31.3376, -90.4476 30.2429, -91.9159 30.2429))"^^gsp:wktLiteral ] ;
    dct:title "SEAWAT Model of Flow and Chloride Transport in the 1,500-Foot, 2,400-Foot, and 2,800-Foot Sands of the Baton Rouge Area, Louisiana" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "John K Lovelace" ;
            vcard:hasEmail <mailto:jlovelac@usgs.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/69024fbe-2557-4e0d-b069-6ce5e7b8388a/resource/3d776bba-5157-4fc4-a8f9-c72a84d57e92>,
        <https://data.amerigeoss.org/dataset/69024fbe-2557-4e0d-b069-6ce5e7b8388a/resource/832fa559-73f7-41d3-9884-347be73d5e34> ;
    dcat:keyword "amerigeo",
        "amerigeoss",
        "ascension-parish",
        "avoyelles-parish",
        "baton-rouge",
        "ckan",
        "concordia-parish",
        "east-baton-rouge-parish",
        "east-feliciana-parish",
        "environment",
        "geo",
        "geoscientificinformation",
        "geoss",
        "groundwater",
        "groundwater-model",
        "hydrogeology",
        "iberville-parish",
        "inlandwaters",
        "livingston-parish",
        "louisiana",
        "modflow-2005",
        "national",
        "north-america",
        "pointe-coupee-parish",
        "salinity",
        "seawat",
        "st-helena-parish",
        "st-landry-parish",
        "st-martin-parish",
        "tangipahoa-parish",
        "transport-model",
        "united-states",
        "usgs-047b61a0-31c1-486b-b92c-620fb841723e",
        "usgsgroundwatermodel",
        "water-budget",
        "water-use",
        "west-baton-rouge-parish",
        "west-feliciana-parish" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/69024fbe-2557-4e0d-b069-6ce5e7b8388a/resource/3d776bba-5157-4fc4-a8f9-c72a84d57e92> a dcat:Distribution ;
    dct:description "The metadata original format" ;
    dct:format "XML" ;
    dct:issued "2022-08-07T11:29:29.203766"^^xsd:dateTime ;
    dct:modified "2025-11-22T09:55:10.415108"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://data.usgs.gov/datacatalog/metadata/USGS.047b61a0-31c1-486b-b92c-620fb841723e.xml> ;
    dcat:mediaType "text/xml" .

<https://data.amerigeoss.org/dataset/69024fbe-2557-4e0d-b069-6ce5e7b8388a/resource/832fa559-73f7-41d3-9884-347be73d5e34> a dcat:Distribution ;
    dct:description "Landing page for access to the data" ;
    dct:format "XML" ;
    dct:issued "2022-08-07T11:29:29.203772"^^xsd:dateTime ;
    dct:modified "2025-11-22T09:55:10.415521"^^xsd:dateTime ;
    dct:title "Digital Data" ;
    dcat:accessURL <https://doi.org/10.5066/P9URJ38Q> ;
    dcat:mediaType "application/http" .

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