Chief Justice Beverley McLachlin Legislature Parliament  -  Upper house Senate  -  Lower house House of Commons Establishment  -  Constitution Act, 1867 July 1, 1867   -  Statute of Westminster December 11, 1931   -  Canada Act April 17, 1982  Area  -  Total 9,984,670 km 2  ( 2nd ) 3,854,085 sq mi   -  Water (%) 8.92 (891,163 km 2 /344,080 mi 2