Sep 05, 2011. /Lesprom Network/. Canadian lumber production at the midway point of the year had reached 11.4 billion board feet, 2% ahead of the year-ago pace, as Random Lengths reported. Production in British Columbia through June was 6.2 billion board feet, up 7%, with the Southern Interior up 18% to 265 million board feet. Canadian output in June totaled 1.9 billion board feet, down only negligibly from the previous month and the same month in 2010.