A number of homes in Sion Mills, County Tyrone, have been evacuated after what has been described as the “worst flooding” in the village for years.
Part of the main A5 road is among several roads closed due to heavy rain.
The Northern Ireland Fire & Rescue Service (NIFRS) said it had received about 28 calls to flood-related incidents since 18:00 BST on Sunday.
The fire service is also dealing with flooding at Nutfield Road, Lisnaskea, in County Fermanagh.
The NIFRS said: “We have mobilised resources to 21 incidents mainly in and around Sion Mills and Lisnaskea.
“A combination of local crews and specialist water rescue teams worked extremely hard in challenging conditions, to assist those immediately impacted by the flooding”.
Areas affected in Sion Mills include Garden Terrace, Parkside Gardens and Melmount Road.
Sinn Féin MP Órfhlaith Begley said that more than 30 homes had been flooded.
She said buses had been put on to take those affected from the village.
“This flooding has been extremely distressing for local residents and every effort must be made to support them and to ensure it does not happen again,” she added.
SDLP councillor Cara Hunter, who said it was the worst flooding for years, added: “This is an ongoing problem.
“In Sion Mills we are seeing two, three feet of water and it is now entering homes.”
She told the BBC that residents were leaving their houses to get sandbags.
Melvin Hall Community Centre has opened for anyone who has had to leave their home and an incident centre has been set up at McGillion’s garage in the village.
In a tweet, St Eugene’s Primary School in nearby Victoria Bridge said it was aware of flooding in the surrounding areas and advised people to “only travel in the morning if it is safe to do so”.
- Flooding Incident Line 0300 2000 100
- NI Water 03457 440088
- Housing Executive 03448 920901.