The 88 year old has been missing from Tiverton since Monday.
Police say there is now strong evidence to suggest Jean Disney fell into the water in the early hours of Monday morning (17th Jan).
She was last seen in the John's Way area at 3am wearing a coat over her dressing gown.
Officers have urged those carrying out their own searches, arranged on social media, to stay away from the water.
Devon and Cornwall Police gets another bad report
Three out of three areas 'require improvement'
Fears for future of Torquay's custody centre
MP warns top cop about review
Will Barnstaple remain a port?
Boatowners weigh in on decisions
Divers to fix East Devon pools
Underwater experts will grout tiles
Community group snubs South West Water grant
Their application for cash was successful
Westcountry sex offender gets 18 years
Robert Squires won't get parole until he's at least 92
