An aerial view of the flooded town of Boa Vista do Gurupi, Maranhao state, Brazil


A man fishes in a flooded street in Trizidela do Vale, Maranhao state, Brazil, Saturday, May 9, 2009. Across a vast swath of the country, flooding has killed 40 and forced nearly 300,000 Brazilians from their homes.

A girl plays in a flooded street in Trizidela do Vale, Maranhao state, Brazil, Saturday, May 9, 2009. Across a vast swath of the country, flooding has killed 40 and forced nearly 300,000 Brazilians from their homes.(

Children play in a flooded street in Trizidela do Vale, Maranhao state, Brazil, Saturday, May 9, 2009. Across a vast swath of the country, flooding has killed 40 and forced nearly 300,000 Brazilians from their homes

A man fishes as a truck crosses a bridge, which was partially destroyed by a flood, in Peritoro, Maranhao state Brazil, Sunday, May 10, 2009. Across a vast swath of the country, flooding has killed 40 and forced nearly 300,000 Brazilians from their homes.

A truck crosses a bridge, which was partially destroyed by a flood, in Peritoro, Maranhao state Brazil, Sunday, May 10, 2009. Across a vast swath of the country, flooding has killed 40 and forced nearly 300,000 Brazilians from their homes.

Military personnel load bags of relief supplies to assist flood victims in Sao Luis, Maranhao state, Brazil, Monday, May 11, 2009. Across a vast swath of the country, flooding has killed 40 and forced nearly 300,000 Brazilians from their homes

An aerial view of the flooded town of Boa Vista do Gurupi, Maranhao state, Brazil, Monday, May 11, 2009. Across a vast swath of the country, flooding has killed 40 and forced nearly 300,000 Brazilians from their homes




Volunteers unload a military helicopter with boxes of food for flood victims in Boa Vista do Gurupi in Brazil's northeastern state of Maranhao, Monday, May 11, 2009. Flooding has killed 40 and forced nearly 300,000 Brazilians from their homes

Homes are flooded in Boa Vista do Gurupi in Brazil's northeastern state of Maranhao, Monday, May 11, 2009. Flooding has killed 40 and forced nearly 300,000 Brazilians from their homes.

Volunteers run to unload a military helicopter with boxes of food for flood victims in Boa Vista do Gurupi in Brazil's northeastern state of Maranhao, Monday, May 11, 2009. Flooding has killed 40 and forced nearly 300,000 Brazilians from their homes

The city of Turiacu is flooded in Brazil's northeastern state of Maranhao, Monday, May 11, 2009. Across a vast swath of the country, flooding has killed 40 and forced nearly 300,000 Brazilians from their homes


An aerial view of the flooded town of Araioses, Maranhao state, Brazil, Tuesday, May 12, 2009. Flooding has killed 40 and forced nearly 300,000 Brazilians from their homes.

An aerial view of the flooded town of Araioses, Maranhao state, Brazil, Tuesday, May 12, 2009. Flooding has killed 40 and forced nearly 300,000 Brazilians from their homes

Residents unload a military helicopter with boxes of relief supplies for flood victims in Araioses, Maranhao state, Brazil, Tuesday, May 12, 2009. Flooding has killed 40 and forced nearly 300,000 Brazilians from their homes

Residents unload a military helicopter with boxes of relief supplies for flood victims in Araioses, Maranhao state, Brazil, Tuesday, May 12, 2009. Flooding has killed 40 and forced nearly 300,000 Brazilians from their homes

An aerial view of the flooded town of Araioses, Maranhao state, Brazil, Tuesday, May 12, 2009. Flooding has killed 40 and forced nearly 300,000 Brazilians from their homes.

An Air Force officer looks at the sand dunes of the Lencois Maranhenses National Park from an helicopter providing relief supplies to flood victims in Maranhao sate, Brazil, Tuesday, May 12, 2009. Flooding has killed 40 and forced nearly 300,000 Brazilians from their homes.

An aerial view of the sand dunes at the Lencois Maranhenses National Park taken from an Air Force helicopter providing relief supplies to flood victims in Maranhao sate, Brazil, Tuesday, May 12, 2009. Flooding has killed 40 and forced nearly 300,000 Brazilians from their homes.

This photo released by Piaui's government, shows a view of a flooding area after a ruptured dam swamped a rural town in Piaui, Brazil, Thursday, May 28, 2009. Raging torrents, from a ruptured dam, swamped a rural town in Brazil, killing a young girl and destroying at least 500 homes in a region already devastated by weeks of floods, authorities said Thursday.