In 2003, seven data themes or layers having national coverage were made available to the Canadian framework data user community via the GeoBase portal and in 2007 and 2008 the eighth and ninth data themes were added. By 2010, one additional data theme will be available. Other data themes are also under consideration for future additions <See New Data Themes>.

Currently the GeoBase portal contains the nine framework data themes or layers described in the following sections.