Wales will face France in the last eight next weekend after scoring four second-half tries to seal top spot in Pool D.
Canada players were hailed for "showing the true value of the game" after assisting with the clean-up operation in Kamaishi.
With both teams already eliminated, Tonga bowed out on a winning note by scoring four tries to USA's three in Higashiosaka on Sunday.
Sunday's Pool A fixture in Yokohama was under threat of cancellation due to the severe storm, but it will take place.
It was another game and another win for Lyon in Top 14, where Castres were defeated by Toulouse on Saturday.
Typhoon Hagibis has caused the cancellation of another Rugby World Cup fixture, with Namibia and Canada's contest no longer going ahead.
Scarlets made it three from three in Pro14 on Sunday as Glasgow Warriors earned a first win of the season.
Joe Schmidt is not optimistic Bundee Aki will avoid a ban but Samoa coach Steve Jackson wants a judiciary to "see some sense".
Ireland head coach Joe Schmidt said it was "hard to argue" with Bundee Aki's red card but was keen to see the incident again.
Ireland will face New Zealand or South Africa in a Rugby World Cup quarter-final after hammering Samoa despite Bundee Aki's red card.
Shaun Edwards is optimistic Jonathan Davies will be fit for Wales in next weekend's quarter-final.
Typhoon Hagibis continues to cast doubt over Scotland's crucial Rugby World Cup game against Japan.
Friday's Pro14 fixtures saw a trio of easy victories as the Cheetahs, Leinster and Connacht all won by big margins.
It has been a case of the storm before the storm in Japan, where Typhoon Hagibis is threatening to derail Scotland's Rugby World Cup.
Kurtley Beale played just 13 minutes of Australia's win over Georgia, but Michael Cheika says his head injury is not serious.
Struggling Canada are wary of another tournament defeat as Namibia bid to end a 22-game, 20-year Rugby World Cup losing streak.