Ontario Base Maps


Ontario Base Maps are a province wide series of general purpose maps produced by the MNR.

Also called “topos” OBM provide an excellent reference map for navigation in rural and backwoods regions across the province.

How To Purchase


Ontario’s Largest Geospatial Data Marketplace
Search for data, select files covering your location, download your order, and work with aerial imagery and geographic data. Use the interactive map to locate your area of interest and purchase multiple data sets easily and quickly with a credit card.
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  Custom Order

Hard Copy Prints
Provide a map sheet number, found on MapWarehouse, to help us locate your area of interest. We will print a 30″ x 24″ hard copy of the selected sheet on demand and ship it to you with a turnaround time of just a day or two.
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OBM Coverage Map

Available Data Coverage

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Who’s It For?

OBM are simple to read and understand for non-technical users. Areas of different land use types and water are identified by shaded blocks of colour.

Standard symbols are used throughout the series for roads, lot and concession lines, topography, and various points of interest for built and natural features.

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