Nicola Bulley's body is likely to be found within a two mile radius, according to dive expert Peter Faulding.
The mum-of-two vanished while walking her dog Willow in St Michael’s on Wyre in Lancashire, on the morning of January 27.
Faulding, who assisted police in a river search along with a team of divers, is now also scouring where she could be on land.