Flood-hit Fermanagh residents are braced for further rainfall as several roads remained under water last night.
Prolonged downpours since the weekend led to ground saturation and unusually high water levels in the Erne waterway.
Today is expected to be bright and blustery with some rain falling on high ground as sleet and hail - but heavier showers of rain are being forecast for Saturday and Sunday.
The Met Office said the worst of the rain tomorrow will be along the north coast, feeling colder with strong southwesterly winds and a maximum temperature of 6C, before spreading to all parts on Sunday.
Chief executive of the Rivers Agency David Porter said: “Water levels at Upper Lough Erne have stopped rising at present and remain approximately 200mm below the levels we saw in 2009.
“Rivers Agency and the Electricity Supply Board (ESB) in the south are responsible for controlling the lough levels and we are working closely to ensure everything can be done to reduce the levels and therefore the impact of any flooding.”
Mr Porter added: “It should, however, be recognised that heavy rain can result in a greater in-flow than can possibly be dealt with, even when spilling is in progress.
“The prolonged rainfall, particularly over the past weekend, has resulted in saturated ground conditions and higher than normal water levels in our lakes and rivers.”
A Northern Ireland Fire and Rescue Service spokesman issued a warning for people not to walk through flooded areas.
“Even shallow water moving fast can sweep you off your feet and there may be hidden dangers such as open drains,” he said.