Provincial Digital Elevation Model Tiled Dataset

Provincial Digital Elevation Model (DEM) Version 2.0.0 is a 3-dimensional tiled raster data set which captures terrain elevations and covers the province of Ontario to the 51st parallel. DEM Version 2.0 is an update to the previous DEM Version 1.1 dataset.  DEM Version 2.0.0 was interpolated using ANUDEM 5.1.0 software and five main elevation datasets: i) OBM-Contour, ii) OBM-DTM, iii) OBM-Spot Height, iv) Water Feature Area (lakes and double-lined rivers), and vi) Water Virtual Flow (stream network).  An index has been created to illustrate coverage area and tile reference numbers.

Coordinate system: UTM - NAD 83, Zone 15 to 18.
Source format: Binary Float/Header (Converts to ArcGIS/ArcInfo GRID)
Pixel Resolution: 10 metres (Southern Ontario) 20 metres (Northern Ontario)
Created: 2005 - 2006

Additional Support: Finding, Converting, and Mosaicking DEMs

Restrictions on Access

This resource is available to University of Western Ontario students, faculty and staff for academic, research or personal reasons.   Patrons will be required to present a valid UWO ID card and sign a release form when requesting the data. Data must be requested in person at the Map and Data Centre Reference desk.  Provincial DEMs can also be requested from the Equinox Data Delivery System (IDLS). Search by "Advanced File Search" and set the File Type to "Map".

Data Manipulation / Usage

The Map and Data Centre has 2 GIS workstations equipped with ArcGIS 10.0 and other software to explore/manipulate the data.  UWO users may also copy requested resources to a data storage device (ex. USB flash drive, CD-R) for research or teaching use outside of the library. The Ontario Ministry of Natural Resources should be cited in any maps or graphics generated.

Sample View of the Data

DEM with Road Network Overlay  -  The Coves, London, Ontario  -  1:50,000

Sample Citation

Ontario Ministry of Natural Resources. Provincial Digital Elevation Model - Tiled Dataset, version 2.0.0 [computer file]. Peterborough : Ontario Ministry of Natural Resources, 2005-2006.