Police have been searching for a missing dogwalker that it is feared could have been swept away by floodwaters.

The man disappeared on Saturday afternoon around the River Conwy in Trefriw, with searches commencing shortly after 4pm when a family member raised the alarm.

Fields near the river often inundate during heavy rain, raising concerns he may have been caught in the swollen river.

The man's dog has been found safe, but despite extensive searches involving the fire service, police, ambulance service, and a Coastguard helicopter, the man remains missing.

Ogwen Valley Mountain Rescue Team reported that rain, melting snow and ice, combined with high tide, have increased water levels.

Thermal imaging cameras on the helicopter helped track the river but the man has not yet been found.

Search efforts are expected to resume this morning.