The Reversing Falls is a unique phenomenon caused by the tremendous tide in the Bay of Fundy - the highest tides in the world. The bay's tidal action is affected by the funnel shape of the bay and by the moon's phases.
At low tide, the St. John River, which runs for 450 miles through the Province of New Brunswick, empties into the bay through a narrow rocky gorge. Near Fallsview Park, an underwater ledge, 36' below, causes a boiling series of rapids and whirlpools. The rising tide slows the river current to a stop and for 20 minutes a rest period called low slack tide allows boats to navigate the Falls. Once the tide is higher than the river, the reversal of the current occurs and continues until high tide. The water rises up to 14 1/2 feet above sea level in the gorge.
Then the tide slowly descends but still flows inland until it is at river level again (high slack). After 20 minutes rest, the river resumes its natural flow and the tide drops away to low tide revealing the rapids and whirlpools again.
It is recommended to view the Falls twice - near low tide and near high tide. A film presentation of the Reversing Falls can be viewed in the Rooftop Theatre at the Falls Restaurant for a small fee.
View this wonder from two vantage points - Fallsview Park and the Falls Restaurant observation deck
Slack Tide at Reversing Falls
For more information: Reversing Falls Visitor Information Centre 200 Bridge Road
Tel: (506) 658-2937 (season: May - October)
Tel: (506) 658-2855 (year round)
Toll free: (866) 463-8639
Reversing Falls Jet Boat Rides
Perhaps one of the best ways to experience the powerful rapids of the Reversing Falls is by Jet Boat. Challenge the phenomenal Reversing Falls aboard our specially designed jet boats. Hold on tight as you splash your way into whirlpools, white caps and rapids created by the tremendous tides of the Bay of Fundy. This is the only way to experience the power of the mighty Reversing Falls! "A MUST DO" in Saint John, New Brunswick.
We also offer relaxing tours of the Saint John Harbour and the Falls. Take off for a sightseeing tour where you will witness the phenomenon of the famous Reversing Falls and its whirlpools, discover historic sites, the port and even meet with seals.
