RIO DE JANEIRO , Brazil ( CNN ) -- The death toll from flooding that has covered large parts of Brazil continued to rise Friday , with the government reporting seven new fatalities , bringing the total to 38 . Floodwaters reach almost to the tops of some homes in Piaui state in Brazil . The rain-induced floods left nearly 800,000 people displaced , according to the Brazilian civil defense agency . Rain has fallen steadily in some parts of the country for more than two weeks and is forecast to continue for another 10 days . World Vision , a relief agency working in Brazil , predicted it could take 30 days for flood waters to recede . Communities in 10 states have been swamped by the floods , though most of the fatalities have occurred in the country 's northeast , officials said . The Brazilian government was working with local governments Friday to deliver food , cleaning materials and other supplies to the affected areas -- using helicopters to reach some areas made impassable by flooded roads . Meteorologists and other weather specialists are divided over the cause of the downpours , particularly in the normally dry northeastern section of the nation . Some say ocean temperatures are to blame , while others say deforestation has led to the climate change . Brazil has been devastated by rain-swollen rivers for months . Flooding in the southern part of the nation in November and December killed more than 120 people and left about another 30 missing . Journalist Fabiana Frayssinet contributed to this story from Rio de Janeiro .
Seven more people perish in Brazil floods , bringing government 's death toll to 38 . Nation 's civil defense agency says nearly 800,000 have been displaced . Government was working with local governments Friday to deliver food , supplies . Rain has fallen steadily in some parts of the country for more than two weeks .