From the Garmin news release:

Tuesday, October 27, 2015 10:55 am CDT

Garmin is pleased to announce expanded availability of our comprehensive obstacle database to now include Canada for select Garmin portables and certified avionics. Man-made structures such as towers that are greater than 200 feet AGL are included within this database. Additionally, an obstacle database tailored to helicopter operators includes man-made structures that are greater than 10 feet AGL.

Source: http://newsroom.garmin.com/press-release/aviation/garmin-expands-obstacle-database-coverage-include-canada

Posted: October 28, 2015