The red line on this chart indicates the current tide status. The valleys and peaks are the upcoming 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 is the largest contributing factor to the tides. FULL or HARVEST moons produce the greatest extremes. Watch for 8M+ HIGH tides and 0- LOW tides for the utmost experience.