Residents mentioned they heard a loud blast from the course of Taff’s Nicely at about 12:30 BST, after which “big quantities of water” began speeding down the hillside.
One household who stay within the affected space mentioned they have been turned again at a police cordon and have no idea how badly affected their house could also be.
Steven Mordecai, one other resident from the realm, mentioned he noticed a “wall of water” when he went to the again of his backyard to see what was happening.
“I grabbed maintain of my gate and I used to be floating. It was so forceful it was unreal,” he mentioned.
