Continuing monsoon rains are devastating parts of Thailand as it swamps through Southeast Asia.

The ongoing disaster that began two months ago has deluged one third of Thailand.

Twenty-three provinces have been affected and one of its largest cities is being prepared for evacuation.

Chiang Mai, a popular tourist destination in Thailand's north, has become the latest area to be affected by the rising water levels.

Muddy flows have overflowed into the city centre, transporting streets into waterways and making boats the only mode of transport available.

Al Jazeera's Wayne Hay reports.