TOPOGRAPHY

Raster product for easy access through the internet of free topographic images of Canada

The Digital Chart of the World (DCW) is an Environmental Systems Research Institute, Inc. (ESRI) product originally developed for the US Defense Mapping Agency (DMA) using DMA data. We used the DCW 1993 version at 1:1,000,000 scale. The DMA data… Read more.

The CGDI Data Alignment Layer (CDAL) is a base of reliable georeferenced points available to geospatial data users for data correction. The CDAL points also enable users to simultaneously display data from various sources as well as data produced at… Read more.

see also the Ontario Base Maps here