Authorities say heavy rains have triggered flooding that has affected close to a million people in southern Pakistan.

Officials in Sindh province said Wednesday that rising water levels have forced more than 50,000 people from their homes.

Pakistan is still recovering from last year's devastating floods that killed more than 1,700 people and affected nearly 20 million others. Aid agencies say tens of thousands of families are still without proper housing.

Meanwhile, villages in Sindh have been flooded, crops have been destroyed and livestock has been lost as residents seek shelter in elevated areas.

Members of the army and navy have been evacuating those affected in the Badin and Thatta districts, among others.

Makeshift relief camps have been set up, but officials said Wednesday there is still an urgent need for aid.

Pakistan's meteorological office has forecast more rain in the coming days.