Photographer Terry Harris was present as Underwater Search Units attended the scene in Cowbit as the search for the 17-year-old continues.
A spokesperson for Cambridgeshire Constabulary confirmed that crews were heading back to the scene today, after no updates in the investigation yesterday. when searches were also made at garages in Walton.
Bernadette was reported missing from Peterborough on July 21 by her parents after she had not been seen for three days.
Police have been carrying out enquiries and searches in an attempt to locate Bernadette, however an investigation has now been launched into her murder.
Detectives from the Bedfordshire, Cambridgeshire and Hertfordshire Major Crime Unit declared the case a ‘no-body’ murder investigation on Friday.
DCI Jerry Waite said: "Due to the length of time Bernadette has been missing and concerns she may have come to some harm, we made the decision to declare this a murder investigation yesterday morning.
"Whilst we hope we do find Bernadette alive and well, there is every possibility this may not be the case therefore my team and I will do everything possible to find out what has happened to her and bring any offenders to justice."
Anyone with information should contact police either by using the online webchat function, or by calling 101 and quoting Operation Penshaw.