The determination or analysis of spatial attributes of natural and artificial features on, above or below the surface of the earth, whether or not the surface of the earth is situated below water, and the storage and representation of such features on a chart, map, plan or geographic representation and includes the practice of cadastral surveying
Source
http://www.search.e-laws.gov.on.ca/en/isysquery/c98f5d31-5d2e-47d2-9c41-a7930ae33eef/45/doc/?search=browseStatutes&context=#hit1