Floods in Sudan have killed at least 15 people in the past two weeks and left almost 100,000 more homeless, officials said.
More than 20,000 houses have been destroyed or badly damaged after heavy rains pounded suburbs of the capital Khartoum.
Thousands of people have also been displaced in a north Ugandan border town of Elegu after floods washed away their homes. Uganda shares a border with South Sudan, which is Sudan's neighbour to the south.
The floods struck after a nearby river overflowed its banks following hours of torrential rains.
Elegu is a vibrant border town with businesses from local bars to lodges, and markets with cross-border trade between Uganda and South Sudan.
Moses Okello, who owned rental houses in the town, said they had been destroyed with nothing to salvage.
"There is no way now. We are stuck. We have nowhere to start," he said.
Sarah Ninsiima, another victim whose bar and lodges got submerged, said she had no roof over her head and wondered what she would do next.
"That day I wanted to go to another place, we were told this place usually floods during rainy season. I heard people screaming that the floods were coming, only to realize the water was knee high and it was on the beds," said Ninsiima.
The floods have heightened fears of a cholera outbreak as locals say all the pit latrines were washed away and people have to use bushes as toilets.
The Ugandan Red Cross has so far delivered a few essentials like blankets and food, but many people remain homeless.
Weather experts say more rains are expected until October.