Battling a tide of sewage in Brazil: ‘For 17 days we lived with our feet under water’ | Ciro Barros and Iuri Barcelos

Residents near the world's fourth largest hydroelectric power plant say the Belo Monte dam has made their houses prone to floods of waste water

A line on the wall of Carlos Alves Moraes' house shows the highwater mark of the flood which hit his neighbourhood in August. Houses near the lagoon are built on stilts to protect against seasonal rains, but now, because of the dam, they are prone to flooding throughout the year, he says.

"We spent 17 days in August living here with our feet under water," he says.