These digital orthoimages provide full-colour aerial coverage of Durham (20 cm), Brampton(PDF) (10 cm), Mississauga(PDF) (15 cm), and Oakville(PDF) (10 cm). Images were provided by J.D. Barnes Limited and are in 1 km tiles.

Spatial reference and data type

These georeferenced images are available in Universal Transverse Mercator (UTM) 17 coordinates; horizontal datum is North American Datum (NAD) 83. They are stored as compressed MrSID data files.

Data access

In order to access these data sets, please visit the Geospatial Centre reference desk during reference hours. Library reference staff are available to provide further information about these data sets and to deliver data upon request. Under the terms of the library's license agreement, these data sets are for use by students, faculty, and staff at the University of Waterloo only.

Data manipulation and storage

There are public workstations in the Geospatial Centre that provide access to the ArcGIS software program, program extensions and data manipulation utilities. Patrons may use the Geographic Information System (GIS) and image processing software in the library to view and manipulate the data. UWaterloo faculty, students and staff may copy these data to other media (for example: CD, DVD or Zip disc) for use elsewhere.

Data output

These images may be exported from ArcGIS in a choice of bitmapped formats (also known as raster graphics) including JPG, TIFF, GIF, and BMP or in a choice of vector graphics formats including Adobe Illustrator (AI), Encapsulated Postscript (EPS), and Scalable Vector Graphics (SVG). Yet another option is PDF.  The user defines the output resolution.

Use restrictions/licensing/copyright

These data are provided for personal use for academic, research, and/or teaching purposes. A data release agreement must be agreed to before these licensed data can be released. J D Barnes Limited must be acknowledged on any derivative product, whether printed or electronic, including for example, a printed map, a raster or vector graphic, a web-based application, etc. Patrons are advised to fully respect the provisions of Canada's Copyright Act as well as terms and conditions imposed by the data provider.


Greater Toronto Area: orthoimagery 2008 [computer file]. J D Barnes Limited 2008.

Sample view of the data

Oakville, Ontario

2008 Image shows Oakville, Ontario

Data courtesy of J D Barnes Limited