Eleven barges departed from Kosti in the Sudan 12 days ago carrying 2,822 people and are expected to reach Juba on Wednesday.
The UN said the returnees are being assisted by a medical team made of one doctor, two medical assistants, two nurses, one midwife and four social workers.The convoy has eight luggage barges and three double-decker passenger barges.
Last week, the International Organization for Migration, sent 113 returnees to Juba by plane from Khartoum.
Sixty five were extremely vulnerable individuals from the Kosti way-station and 48 were South Sudanese who had been evacuated from Libya to Khartoum earlier in the year.
An IOM doctor accompanied the returnees during the flight.