North Wales Police are appealing to anyone who has left a flooded property in the Garford Road area of Rhyl to stay with relatives or friends to contact them immediately.
Emergency service are about to begin a search of affected properties in the area in an effort to account for all residents.
The number to call is 01492 518383.
More top news
Crowds came to hear him speak this afternoon in Bangor - a seat where fewer than 100 votes could make the difference at the next election.
Scattered showers with the odd heavy burst possible but there will be plenty of sunny spells too.
A rather wet and windy evening, with rain in the north and showers elsewhere.