An Flash Flood Advisory has been issued for Keeseekoose and Cote First Nations, along with surrounding areas, following heavy rainfall.
Officials say water is moving across the ground as it cannot soak in or drain away, leading to flooding on highways and community roads.
Some routes have already become impassable.
Travelers and residents are being warned to use caution, as hazardous conditions are expected to continue.
The advisory remains in effect until further notice, and people are urged to avoid flooded areas and monitor local updates.