Medical researchers expressed concern that cases may have gone undetected in the world's fourth most populous country last week.

Indonesian scientists claimed that the capital's airport would be flooded with water by 2035.

About 30 people, most of them teenagers, had just returned from a tour at a nearby hydropower plant and stopped on the footbridge to take photos of the extreme flow of the river.

The magnitude 6.0 quake was centred 141 kilometres west of Abepura city at a depth of 33.6 kilometres, the U.S. Geological Survey said.

It's the worst flooding in the area since 2007, when 80 people were killed over 10 days.

Monsoon rains and rising rivers submerged a dozen districts in the greater Jakarta area and caused landslides.

It was the worst flooding since 2013, when 57 people were killed after Jakarta was inundated by monsoon rains.

The flooding, among the deadliest in years, caused chaos in parts of Southeast Asia's biggest city with train lines blocked and power outages in some areas.

Severe flooding hit Indonesia's capital as residents were celebrating the New Year's, killing at least nine people, displacing thousands and forcing the closure of a domestic airport.

Disaster-prone Indonesia, a vast archipelago of more than 17,000 islands that is home to 260 million people, lies along the “Ring of Fire,” an arc of volcanoes and fault lines in the Pacific Basin.