Map Sources at Libraries and Learning Commons: Ontario Base Maps

Check the Library's catalogue record for holdings

 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

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.

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