The highest recorded level of the Wye at Penallt/Redbrook was 7.17 m of Feb 3 2002 but this was exceeded by some 15 cm or so on the morning of Tuesday February 18th 2020, when record levels were also recorded in Hereford and Monmouth.
Bridge Cottage and The Boat Inn were both badly affected by flooding:-
A video of the scenes in and around the Penallt Viaduct shows the extent of the flooding:-