1. Where does the information in this map come from?
The Make a Topographic Map shows the following Ontario government data:
- Administrative Boundaries - Provincial boundaries, municipalities, townships, lot and concessions, provincial parks, conservation reserves, national parks, Indian reserves and other federal lands.
- Airports
- Bridges and Tunnels
- Buildings
- Dams
- Elevations - Contours, spot heights and hill shading.
- Falls, Rapids and Rocks
- Lakes and Rivers
- Place Names
- Pipelines
- Railways
- Roads
- Imagery
- Trails
- Transmission Lines
- Wetlands
- Wooded Areas
2. How was this web map created?
The map uses a topographic data cache to display data. A cache is a series of pre-drawn maps that are compressed for fast, seamless display at predefined scales in web maps. The cache is a snapshot of the various data layers.
To find out more about the topographic cache, please view the metadata record.
3. How current is the data?
Each of the data layers has different maintenance cycles and is updated at different times.
To find out more about the data’s currency, please view the metadata record.
4. Why are some buildings missing from the map?
The Ministry of Natural Resources no longer maintains building data across the province. Try turning on imagery under the Map Layers tab to see more buildings.
5. Where do the names of lakes, rivers, islands, cities and other features come from?
This map features the official names approved by the Ontario Geographic Names Board. You may see alternate names appear in brackets for some places and geographic features.
6. Why is the imagery missing for some areas of Ontario?
Imagery has not yet been collected for all areas of the province. As imagery becomes available, it will be added.
7. Can I download data from this map?
Data cannot be downloaded directly from this web map. However, much of it can be ordered from the Land Information Ontario website.
8. Can I save and print my map?
Click on the Mark-up and Printing tab to save and print the map you make.There are also tools that let you customize your map such as by adding text.
9. Why doesn’t the map work on my phone or tablet?
The “Make a Topographic Map” application does not work well on mobile devices at this time.
10. How do I report an error or missing data?
We want your feedback. Please email a screen capture of the missing data or error to basedata@ontario.ca. Submissions will be reviewed and considered where appropriate.
11. How do I find the Assessment Roll Number (ARN) for my property?
Property owners can go to the Municipal Property Assessment Corporation (MPAC) website and use the AboutMyProperty™ application to find information about their property including the Assessment Roll Number.
