Stacie Dawn Goran, 42, was last seen by a friend on June 24.
In a statement issued through the Calgary police department, Goran's relatives say the mother of four was displaced during the flooding and there's been no words on her whereabouts since.
Her family praises Goran's outgoing and helpful nature but also admits she is addicted to alcohol and prescription medication.
They say she had been relying on shelters and food banks for the last few months to provide her everyday needs.
Goran had been in contact with her children and her mother the day before she vanished and promised to contact them the following day but did not.
Goran is described as slender, five-foot-four with blond hair and brown eyes.