A training exercise is being held by the fire service on Bideford Quay tomorrow (Thursday, May 16).
Fire fighters will be carrying out a water rescue exercise in the river from around 6.30pm.
Organiser Ian Donovan said the fire service would be working with other emergency services too.
He warned people not to worry if they saw a number of emergency vehicles and activity on the Quay that evening.
The exercise will be taking place in the water near the old Bideford bridge.
Check back for photos of the exercise on Friday.