Caused by the Bay of Fundy tides, the Tidal Bore occurs twice daily. Watch the water in the Petitcodiac River roll back upstream in one wave that can go up to 60 cm in height! Estimated Tidal Bore times online and at the Visitor Information Centre beside Bore Park, downtown Moncton. Please note: Many factors may affect the time of the Bore by 15 to 20 minutes before or after the scheduled arrival time. Arrive early!