Sponsored by Natural Resources Canada, GeoConnections is tasked with developing the Canadian Geospatial Data Infrastructure (CGDI), which will coordinate Canada’s numerous databases of geographic information and make them accessible through a common window on the Internet.
A powerful search engine allows the user to search for data by feature type or location. The GeoConnections Discovery Portal lists all possible locations for your data and whether the data is from a Canadian source and if it is available free of charge.
http://www.nrcan.gc.ca/earth-sciences/geomatics/canadas-spatial-data-infrastructure/8906