Police, Severn Area Search and Rescue and the Coastguard are all looking for a man who's gone missing from Tutshill near Chepstow.
Jeremy Stent is considered to be in a vulnerable state of mind.
The 46-year-old was last seen in Wyebank Road, which runs parallel to the river, heading towards Beachly Road around 9.30pm last night (24 August).
He is described as being a slim, about 5ft 8ins tall with dark hair and was last seen wearing blue jeans, a rust-coloured T-shirt and a blue cardigan.
Anyone who sees Jeremy or knows where he is is asked to call Gloucestershire Constabulary on 101 quoting incident 432 of 24 August.