The Canadian Army is sending more than 500 troops and have 12 aircraft working to assist in relief efforts for at least the next 30 days.
Air Canada said it has increased cargo capacity into and out of Vancouver in the wake of the flooding that cut highway links to the city, reported the Canadian Press.
The airline says it has increased capacity to the city between from its hubs in Toronto, Montreal and Calgary.
The government is also waiving the Covid test requirements for reentry to Canada for people living along the border who cross into the US to get essential supplies such as fuel and food.
The measures came as Vancouver, Canada's major port is bracing for more rain a week after deadly floods left residents of southwest British Columbia under fuel rationing and travel restrictions.
Between 1.2 to 1.6 inches of rain was expected in the areas of the province. The ground is saturated and there is nowhere for it to go, say officials.
The storm washed away chunks of highways, closed the tracks of Canada's two major railways and caused at least four deaths after a mudslide. The province - a major conduit to Asian markets and home to one of the busiest ports on the west coast - is in a state of emergency after the deluge last week.
The flooding has killed tens of thousands of farm animals and agricultural land has been 'devastated', say officials.
Cars have been lining up at filling stations in Vancouver and the surrounding coastal region after limits on fuel of eight gallons per visit were announced, restrictions that will continue for the next nine days.
The province also issued a ban on all non-essential travel on three major highways even as some roads from the coastal region to the interior are being gradually repaired and reopened.