NEW : Government approves millions of dollars in funding for flood victims . 46 dead , More than 18,000 residents homeless or displaced in 46 states . More than 18,000 people still missing . 46 homes damaged or destroyed in Rio Largo state .
NEW : Government approves millions of dollars in funding for flood victims . 46 dead , more than 150,000 residents homeless or displaced in two states . More than 600 people still missing . More than 18,000 homes damaged or destroyed in Alagoas state .