At the Reversing Falls Rapids tides make a complete high and low tide cycle in 12 hours and 20 minutes. Times for high and low tides are known and indicated on the chart below.
The red line on this chart indicates the current tide status. The valleys and peaks are the upcoming high and low tidal extremes. In-between the extremes … Reversing Falls Rapids becomes as placid as a peaceful lake ! To see whirlpools come at the low tide extreme. To see Reversing Falls Rapids in reverse come at the high tide extreme. The pull of the MOON and the shape of the Bay of Fundy are the largest contributing factors to the famous Reversing Falls Rapids tides. Full moons, especially a harvest moon can produce swings in water level of 9 meters or 28 feet.