Directional Orientation
Map Reading
UTM
Geo-Codes
Map Systems
 Map Reading and UTMs
Metric System
 maps Ontario following a UTM grid
 4 Zones apply to Ontario
6 degrees wide, 8 degrees of latitude
Easting and Northing are Longitude
and Latitude like coordinates used in
UTM
UTM - WHAT IS IT?
•Universal Transverse Mercator
• method of map reading
• is universal and used internationally
• no two UTM squares will have the
same code
Therefore, ANY LOCATION can be
found on a map by having the UTM
code.
UTM - WHAT IS IT?
A UTM is a series of lines that form a one square
kilometer grid. The grid is drawn from the south to
the north and from the west to the east. These lines
are called Eastings and Northings.
As most maps used by the Ministry of Health are
gridded as 1 kilometre squares, there are larger maps
which may be gridded to 5 or even 10 km squares.
UTM - EASTING
The EASTING is the 3-digit number that is
read from the map first. These numbers
are located at the bottom or top of the
map and are read from left (or west) to
right (or east). Remember a top of the map
is always north.
497
498
499
450
451
N
1 km
497
498
Easting
499
450
451
UTM - NORTHING
The Northing is the 4-digit number that is read from
the map last. These numbers are located on the sides
of the map and are read from bottom (or south) to top
(or north).
1 km
5150
5150
5149
5149
5148
5148
5147
5147
N
Northing
READING A UTM
To obtain a UTM you must always read the Easting
number first, then the Northing. Where those two
lines meet in the bottom left corner of the square,
that 7 digit number will be the UTM.
Example: The blue box below is the location where
we must find a UTM.
497
5150
498
499
450
451
5150
5149
5149
5148
5148
5147
497
5147
498
499
450
451
499 5148
Northing
Easting
The UTM for everything within the blue box is - 499 5148
READING A UTM
Lets try another example: Find the UTM for
the blue dot below
498 5149
497
498
499
450
451
5150
5150
5149
5149
5148
5148
5147
497
5147
498
499
450
451
Northing
Easting
The UTM for everything within the same box is - 498 5149
Ministry of
Health
MOH - Map Books
At each CACC, GIS has created a series of
large map books. These books show maps for
the entire coverage area for the centre. Some
centres may have more than one book. Each
map is gridded with the UTM.
Typical MOH Map Page
Adjoining Map Pages
Map Page Number
Easting Numbers
Easting line
Reference Grid
Northing
line
Northing
Numbers
Locate the following:
Intersection of - LaSalle Bv & Elm St W - 497 5149
White Av 498 5149 & 499 5149
Walnut St - 499 5148