Exported Content

Retired Documents


The documents listed below have been retired and provided for historical purposes only. Please go the Standards pages to the left for the most current versions of the Implementation Specifications, Best Practice or Discussion Papers.


Google submitted KML (formerly Keyhole Markup Language) to the Open Geospatial Consortium (OGC) to be evolved within the OGC consensus process with the following goal: KML Version 2.2 has been adopted as an OGC implementation standard. Future versions may be harmonized with relevant OGC standards that comprise the OGC standards baseline. There are four objectives for this standards work:

  • That there be one international standard language for expressing geographic annotation and visualization on existing or future web-based online and mobile maps (2d) and earth browsers (3d)....

HDWG Groundwater IE



The GW IE was designed to: (1) test the use of both WaterML 2 and Groundwater ML (GWML) with the SOS and WFS OGC web services, respectively, (2) test compatibility with industry software clients, and (3) to facilitate sharing of massive volumes of sensor-based water level observations and related water-well features across the Canada and USA border.

Simple Features for OLE/COM

The three OpenGIS® Simple Features Implementation Specifications (one each for OLE/COM, CORBA, and SQL) define interfaces that enable transparent access to geographic data held in heterogeneous processing systems on distributed computing platforms.

The Simple Feature Specification application programming interfaces (APIs) provide for publishing, storage, access, and simple operations on Simple Features (point, line, polygon, multi-point, etc). The purpose of these specifications is to describe interfaces to allow GIS software engineers to develop applications that expose funct...