Thousands of people have been trapped in their homes in Mexico by the worst floods to ever hit the south of the country.

More than one million residents have been affected by the floods in the southern state of Tabasco, which is the size of Belgium and is now 80% underwater.

Officials expect more rain in the coming days. The state's governor has said that 'New Orleans was small' in comparison to the floods.

But where Hurricane Katrina killed more than 1,000 people in New Orleans alone, the flooding in Tabasco has only claimed one life so far.

Army and navy helicopters have joined rescue boats in the efforts to save those trapped.

The Mexican President, Felipe Calderon, has addressed the nation to urged Mexicans to donate aid to flood victims, describing the crisis as 'one of the worst natural disasters in the history of the country'.