Many geometrical schemes - or map projections - are used to represent the curved surface of the Earth on map sheets. Canada uses the Universal Transverse Mercator (UTM) system. It is called transverse because the strips run north-south rather than east-west along the equator. This data class shows a 5 km x 5 km grid coordinate system based on the UTM projection using the North American Datum 83 (NAD83). It includes a UTM Map Sheet Number.

Many geometrical schemes - or map projections - are used to represent the curved surface of the Earth on map sheets. Canada uses the Universal Transverse Mercator (UTM) system. It is called transverse because the strips run north-south rather than east-west along the equator.This data class shows a 100 km x 100 km grid coordinate system based on the UTM projection using the North American Datum 83 (NAD83). It includes: * Military Grid Reference * Atlas identifier

The High Resolution Digital Elevation Model (HRDEM) product is derived from airborne LiDAR data (mainly in the south) and satellite images in the north. The complete coverage of the Canadian territory is gradually being established. It includes a Digital Terrain Model (DTM), a Digital Surface Model (DSM) and other derived data. For DTM datasets, derived data available are slope, aspect, shaded relief, color relief and color shaded relief maps and for DSM datasets, derived data available are shaded relief, color relief and color shaded relief maps. The productive forest line is used to separate the northern and the southern parts of the country. This line is approximate and may change based on requirements. In the southern part of the country (south of the productive forest line), DTM and DSM datasets are generated from airborne LiDAR data. They are offered at a 1 m or 2 m resolution and projected to the UTM NAD83 (CSRS) coordinate system and the corresponding zones. The datasets at a 1 m resolution cover an area of 10 km x 10 km while datasets at a 2 m resolution cover an area of 20 km by 20 km. In the northern part of the country (north of the productive forest line), due to the low density of vegetation and infrastructure, only DSM datasets are generally generated. Most of these datasets have optical digital images as their source data. They are generated at a 2 m resolution using the Polar Stereographic North coordinate system referenced to WGS84 horizontal datum or UTM NAD83 (CSRS) coordinate system. Each dataset covers an area of 50 km by 50 km. For some locations in the north, DSM and DTM datasets can also be generated from airborne LiDAR data. In this case, these products will be generated with the same specifications as those generated from airborne LiDAR in the southern part of the country. The HRDEM product is referenced to the Canadian Geodetic Vertical Datum of 2013 (CGVD2013), which is now the reference standard for heights across Canada. Source data for HRDEM datasets is acquired through multiple projects with different partners. Since data is being acquired by project, there is no integration or edgematching done between projects. The tiles are aligned within each project. The product High Resolution Digital Elevation Model (HRDEM) is part of the CanElevation Series created in support to the National Elevation Data Strategy implemented by NRCan. Collaboration is a key factor to the success of the National Elevation Data Strategy. Refer to the “Supporting Document” section to access the list of the different partners including links to their respective data.

This data set is retired. A new data set replaces at: Bridge Structure The dataset contains bridges, elevated roadways, and culverts information and their location information. The dataset is limited to the City of Toronto geographical boundary. The dataset is presented in two formats as ESRI Point Shapefile and accessible MS Excel file. Each record in the datasets has Structure Id, Structure Type, Structure Class, Location Description, Ownership, Year Built, Steward, Category, Ward No, District No, and Contact Information. With each record, there are 2 sets of coordinates identifying the location in WGS1984 datum Longitude & Latitude coordinate system and NAD1927 datum (1974 adjustment) & projected in 3 degree modified transverse mercator (3MTM) zone10 coordinate system. For the purpose of providing information in this dataset, the term 'structure' is defined as constructed items that are used by the public in the City of Toronto (City). This dataset provides information about the following structures: Bridges with the span of 3 metres or more, Culverts with an opening of 3 metres or more, and the Elevated Components of the F.G. Gardiner Expressway. This dataset contains the City's Transportation Services (TS) fully or partially owned structures, City's Parks, Forestry & Recreation Services (PFRS) owned structures, Toronto & Region Conservation Authority (TRCA) owned structures managed by PFRS, and the Ontario Ministry of Transportation (MTO) owned structures in the City. The information associated with structures was retrieved from the data sources from the City's TS Bridge Management System, City's PFRS Assets Management System, and MTO published bridge data from Ontario Open Data. The historical version of the dataset (project's Phase-1) has been published to the City of Toronto Open Data catalogue under 'Transportation' category with the title 'Transportation Division Bridge Data'. Historical version access link: Transportation Division Bridge Data Users who need updated and new information related to bridges, elevated roadways, and culverts should refer to the current version of the dataset published to the Open Data catalogue with the title as 'Bridges, Elevated Roadways, and Culverts in Toronto'.