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This is a list of GIS data sources (including some geoportals) that provide information sets that can be used in geographic information systems (GIS) and spatial databases for purposes of geospatial analysis and cartographic mapping. This list categorizes the sources of interest.
A geoportal is a type of web portal used to find and access geographic information (geospatial information) and associated geographic services (display, editing, analysis, etc.) via the Internet. Geoportals are important for effective use of geographic information systems (GIS) and a key element of a spatial data infrastructure (SDI).
National Land Surveying and Mapping Center (NLSC) nlsc.gov.tw: Thailand: Royal Thai Survey Department: rtsd.mi.th Archived 2001-06-15 at archive.today: WebGIS: Turkey: Harita Genel Müdürlüğü: harita.gov.tr: HGK-Atlas: Uzbekistan: O’zdavgeodezkadastr (State committee of land resources, geodesy, cartography and cadastre of Uzbekistan) or ...
GIS data acquisition includes several methods for gathering spatial data into a GIS database, which can be grouped into three categories: primary data capture, the direct measurement phenomena in the field (e.g., remote sensing, the global positioning system); secondary data capture, the extraction of information from existing sources that are ...
On July 23, 2009, the Energy and Mineral Resources Subcommittee of the House Natural Resources Committee held an oversight hearing on federal geospatial data management. Rep. John Sarbanes of Maryland quoted a U.S. General Accounting Office (GAO) report from his briefing material saying that only 4 of the FGDC member agencies were in compliance ...
[1] [2] It is also called geospatial data and information, [citation needed] georeferenced data and information, [citation needed] as well as geodata and geoinformation. [ citation needed ] Location information (known by the many names mentioned here) is stored in a geographic information system (GIS).
Currently, the best source for nationwide LiDAR availability from public sources is the United States Interagency Elevation Inventory (USIEI). [1] The USIEI is a collaborative effort of NOAA and the U.S. Geological Survey, with contributions from the Federal Emergency Management Agency, the Natural Resources Conservation Service, the US Army Corps of Engineers, and the National Park Service.
The U.S. state of Alaska is divided into 19 organized boroughs and 11 census areas in the unorganized borough.Alaska, and the states of Connecticut and Louisiana are the only states that do not call their first-order administrative subdivisions counties (Connecticut uses councils of government and Louisiana uses parishes instead). [1]