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Map Sources at Libraries and Learning Commons: Ontario Base Maps

Find maps in the Libraries and Learning Commons

Check the Library's catalogue record for holdings


Ontario GeoHub

 The Ontario GeoHub is a website for discovering and downloading geospatial data. Powered by Land Information Ontario, GeoHub is the authoritative source for Ontario GeoSpatial Data



1998/1999 OBM set

Arranged by sheet number, using the UTM (Universal Transverse Mercator) coordinate system, for example ...

10 17 6250 47600

   10 = scale of 1:10,000

   17 = grid zone for Southern Ontario

   6250 = the Easting (North/South border)

   47600 = the Northing (East/West border)


Uses photography flown in 1984

Datum:  NAD 83

Acess to the set is available via the

 Ontario Ministry of Natural Resources web site.


Library Liaison

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Cynthia Kamin

1976 OBM set

The Ontario Base Map (OBM)

Series published in 1976

from aerial photography flown in 1975

Scale @ 1:10,000

Datum:  NAD 83

Projection:  UTM (Universal Transverse Mercator)

The Daniel J. Patterson Campus in Niagara-on-the-Lake Libraries and Learning Commons has the complete black & white set for the Regional Municipality of Niagara

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