{
"name":"NationalBaseMap",
"title":"NationalBaseMap",
"type":"Map Service",
"typeKeywords":["ArcGIS Server","Service","Map Service"],
"description":"The National Base Map delivers seamless, full-colour topographic mapping for all of Australia, encompassing the mainland, outer islands such as Norfolk, Lord Howe, and Macquarie, as well as external territories including Cocos (Keeling), Christmas, Heard and McDonald Islands, and the Australian Antarctic Territory. This comprehensive mapping service integrates authoritative data from a range of providers, ensuring consistent and reliable coverage across diverse geographic regions. The map incorporates a mix of legacy and contemporary datasets. Where new or updated data sources are available, they are integrated to ensure the map reflects the most current information. However, for features that are not subject to frequent change such as geological formations, remote infrastructure, or long-established cultural features, or where no newer data exists, older datasets are retained to maintain completeness and continuity. For Christmas Island and Cocos (Keeling) Islands, the data is sourced from the Edition 1 NATMAP Topographic Mapping datasets at scales of 1:30,000 and 1:25,000 respectively. Mainland Australia is represented using Geoscience Australia\u2019s GEODATA TOPO 250K product for scales beyond 1:100,000, while OpenStreetMap data is used for scales of 1:100,000 and larger to provide enhanced local detail. Suburb boundaries are derived from the 2018 and 2020 datasets provided by the Australian Bureau of Statistics.A range of recently updated thematic datasets has been included to enhance its accuracy and relevance. Vegetation data is aggregated from the National Vegetation Information System (NVIS) version 6.0, Forests of Australia (2018), and Catchment Scale Land Use of Australia (2020). Road networks are sourced from Geoscape data as of February 2023, while railway infrastructure, including stations and crossings, is compiled from Geoscape, Foundation Rail (eCat 145400), and Defence datasets from 2019. Protected areas are represented using the Collaborative Protected Areas Database (CAPAD) version 2022. Aircraft facilities have been updated using GEODATA Series 3 and Geoscape data, along with currently unmaintained, select foundation data which still remains relevant for features that are not subject to frequent change. Homestead data is a composite of multiple sources including the Gazetteer of Australia (2023), Heritage Tasmania (2024), NSW Government building complex points (2023), GA data for Victoria - location only verified (2006\u20132011), QLD Govt - QSpatial Homesteads dataset (2024), and Heritage Victoria, Victorian Heritage Database (2024). Built-up areas are derived from Bing Building Footprints captured between 2013 and 2018. Lighthouse data is compiled from Marine Infrastructure Points GEODATA Series 3, OpenStreetMap Lighthouses (2024), Australian Maritime Safety Authority (AMSA) Aids to Navigation (2015), and other online resources. Localities data reflects the latest updates from the AUSTopo 250K maps.The map portrays detailed graphic representations of features that appear on the Earth's surface, including cultural, hydrographic, marine, transport, vegetation, and relief elements. Topographic information was initially checked using satellite imagery in 2008 and supplemented with additional sources in 2025. While originally limited field verification has been conducted, users should note that some information may not be accurate. Elevation data is represented using NASA\u2019s Shuttle Radar Topography Mission (SRTM) dataset acquired in February 2000 and released under Creative Commons licensing in 2011. This dataset underwent processing to remove stripes, fill voids, and correct vegetation offsets, as detailed in the SRTM Derived Products User Guide (Geoscience Australia, 2011). Bathymetry imagery is sourced from Natural Earth, which provides free vector and raster map data via naturalearthdata.com.Geoscience Australia gratefully acknowledges the contributions of the Attorney General\u2019s Department (Territories of Australia), the Department of Environment, Water, Heritage and the Arts (Parks Australia), and all other data providers who supported the development and enrichment of this mapping product.",
"extent":[[-3.4599363104346715E7,4.330253212196291E7],[-3.815165827014069E7,3.7482670052867904E7]],

"url":"https://services.ga.gov.au/gis/rest/services/NationalBaseMap/MapServer"
}