In one minute and 34.96 seconds, the Norwegian bagged his fourth Super-G victory at the Canadian resort, leaving all his rivals nearly a second adrift.
Frenchman Adrien Theaux was second, 0.85 behind, while Austria's Joachim Puchner was third, 0.90 off the pace.
Only Austria's Stefan Eberharter and American Bode Miller have previously won both races on the Lake Louise programme and they went on to win the overall World Cup at the end of the season.
Svindal is chasing his third big globe after clinching titles in 2007 and 2009.
His 18th World cup win was excellent news for the 29-year-old Super-G Olympic champion ahead of the Beaver Creek trip next week-end.
The victory sent Svindal on top of the World Cup overall standings with 200 points, ahead of American Ted Ligety, who showed great progress in the discipline by finishing fourth, missing the podium by the slimmest margin.
- Sports & Recreation