What causes the Reversing Falls phenomenon?

The extreme tides of the Bay of Fundy, the highest in the world, force the St. John River to reverse direction twice daily as the tide rises higher than the river level.

How often does the river reverse at the falls?

The river reverses twice each day with the rising and falling tides, roughly every 12 hours and 25 minutes.

Where is the best place to view the Reversing Falls?

The Reversing Falls Skywalk offers the best elevated glass-floor view, while Fallsview Park provides free ground-level access with interpretive signs.

Catch the Reversing Falls at Peak Drama: Check Tide Times First

What Is the Reversing Falls Phenomenon?

The Reversing Falls isn't a waterfall in the traditional sense — it's a tidal phenomenon where the Saint John River flows backward twice daily. The river meets the Bay of Fundy (home to the world's highest tides) through a narrow gorge, creating rapids that reverse direction when the tide rises higher than the river level. You'll see whitewater, whirlpools, and standing waves — quite the spectacle when the timing's right.

When's the Best Time to See the Reversing Falls?

Check tide charts for Saint John before heading out — the show only happens during specific windows. Peak drama occurs roughly 2-3 hours before and after high tide (that's when the river flows backward with maximum force). Low tide? The river flows normally — still pretty, but not the main event.

Here's a quick reference:

Tide Phase	What You'll See	Best For
2-3 hrs before high tide	River slowing, then reversing	Photographers, first-time visitors
High tide peak	Maximum turbulence, whirlpools	The "wow" moment
2-3 hrs after high tide	Gradual return to normal flow	Casual viewing
Low tide	Rapid outflow to the bay	Less dramatic — skip if time's tight

Worth noting: spring tides (during full and new moons) produce the most dramatic reversals. Neap tides? Milder — still interesting, but don't expect the same intensity.

Where Should You Watch From?

Three main spots offer views — each with different vibes. The Reversing Falls Rapids Viewing Park (free, right off Route 1) provides the classic overlook with parking and a small gift shop. You'll get the full panoramic shot here.

Prefer a closer look? Head to the Saint John Kayak & Canoe Club put-in at the bottom of the gorge — though accessing this spot requires local knowledge and proper timing (don't attempt near high tide). The rocks there are slippery. Seriously slippery.

For a different angle — plus food and drink — the restaurant at Reversing Falls Restaurant & Skywalk sits right above the gorge. The skywalk extends over the water. Expensive? A bit. The view? Hard to beat during peak reversal.

That said, the best experience combines planning and patience. Check those tide tables. Arrive early. Bring a jacket — the gorge gets windy. And remember: nature doesn't run on your schedule, so build in some buffer time.