The military will provide both air and land support for critical provincial supply chains and in evacuation and rescue efforts.
Premier John Horgan says travel restrictions will be introduced to ensure essential goods and medical and emergency services can reach communities.
Defence Minister Anita Anand says more troops will be sent to help the hardest-hit communities.
Crews will continue to search through debris left by landslides along Highway 99 near Lillooet and Highway 7 near Agassiz to determine if any vehicles were caught underneath.
No bodies were recovered Wednesday, but at least two people are still reported missing.
B.C. Agriculture Minister Lana Popham says thousands of farm animals died when parts of the Fraser Valley flooded, and efforts are underway to develop routes to allow veterinarians to access farms and treat what livestock may have survived.
This report by The Canadian Press was first published Nov. 18, 2021.