@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix mcr: <https://registry.apicrafter.io/vocab#> .
@prefix dt: <https://registry.apicrafter.io/datatype/> .
@prefix cat: <https://registry.apicrafter.io/category/> .
@prefix country: <https://registry.apicrafter.io/country/> .
@prefix tool: <https://registry.apicrafter.io/tool/> .

dt:us_huc a skos:Concept ;
    skos:inScheme <https://registry.apicrafter.io/> ;
    skos:topConceptOf <https://registry.apicrafter.io/> ;
    skos:notation "us_huc" ;
    skos:prefLabel "USGS hydrologic unit code (HUC)"@en ;
    skos:definition "Code of a hydrologic unit (a drainage area) in the Watershed Boundary Dataset of the US Geological Survey. Each level adds two digits to the code of the unit it lies in, 2 digits for a region (01 to 22), then 4 for a subregion, 6 for a basin, 8 for a subbasin, 10 for a watershed and 12 for a subwatershed; the optional 14- and 16-digit levels exist only in some areas. Always keep it as a string, because spreadsheets drop the leading zero of regions 01 to 09."@en ;
    skos:prefLabel "Код гидрологической единицы USGS (HUC)"@ru ;
    skos:definition "Код водосборной единицы в наборе данных Watershed Boundary Dataset Геологической службы США. Каждый уровень иерархии добавляет две цифры, от 2 цифр для региона до 12 цифр для малого водосбора."@ru ;
    skos:example "02070010" ;
    skos:example "1802" ;
    skos:example "020700100802" ;
    mcr:status "draft" ;
    mcr:isPII false ;
    mcr:classification "identifier" ;
    mcr:regexp "^(?:0[1-9]|1[0-9]|2[0-2])(?:[0-9]{2}){0,7}$" ;
    dcterms:spatial country:US ;
    rdfs:seeAlso <https://pubs.usgs.gov/tm/11/a3/> ;
    rdfs:seeAlso <https://www.usgs.gov/national-hydrography/watershed-boundary-dataset> ;
    rdfs:seeAlso <https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer> .