Mapping Datum Conversion for UTM Co-ordinates

                      In Lower Mainland BC



FROM:  Convert 	TO: 		Change Easting 		Change Northing
===========================================================================
NAD27 Canada 	NAD27 CONUS 	West 1m (-1m) 		North 5m  (+5m)

 	 	NAD83 		West 94m (-94m) 	North 202m  (+202m)

 	 	WGS84 		West 94m  (-94m) 	North 202m  (+202m)



NAD27 CONUS 	NAD27 Canada  	East 1m  (+1m) 		South 5m  (-5m)

 	 	NAD83 		West 93m  (-93m) 	North 197m (+197)

 	 	WGS84 		West 93m  (-93m) 	North 197m (+197)



NAD83 	 	NAD27 Canada 	East 94m  (+94m) 	South 202m(-202m)

 	 	NAD27 CONUS 	East 93m  (+93m) 	South 197m (-197m)

 	 	WGS84 		No Change 		No Change



WGS84 	 	NAD27 Canada 	East 94m  (+94m) 	South 202m (-202m)

 	 	NAD27 CONUS 	East 93m  (+93m) 	South 197m (-197m)

 	 	NAD83 		No Change 		No Change





NOTES:

-Federal Topographic maps (1:50,000, 1:100,000, 1:250,000) are
 NAD27 Canada.

-Provincial TRIM Topographic maps (1:20,000) are NAD83.

-These conversion factors will change when moving from the lower
 mainland.

-Some Trimble units do not support NAD27 Canada, Use NAD27 CONUS
 instead.





Compiled by: 	Bob Manson
		Lions Bay Search And Rescue
		Jan. 12, 1996