Kids day out in Reversing FallsTagged as outdoor, nature
Rte. 100 Saint John,
New Brunswick, Canada
About Reversing Falls
The phenomenon of the Reversing Falls is caused by the tremendous rise and fall of the tides of the Bay of Fundy, which are the highest in the world. The natural southward-facing opening of the Bay of Fundy receives the on rushing ocean tides directly like a funnel. The tidewater is normal when it enters the bay at its widest point. But the farther up the bay it travels the more it changes. It is, in effect, squeezed by the ever-narrowing sides and the constant shallowing of the bottom forcing the water higher up the shores. The low tide running out of the bay collides with the new, incoming high tide, combining forces to make a higher wave coming in. The combination of wave forces is called resonance.
The Bay of Fundy tides are a result of the tidal action originating in the Southern Indian Ocean sweeping around the Cape of Good Hope and then northward into the Bay of Fundy. They are also affected by the distance of the moon from the earth at this longitude. Here in Saint John, the bay tides rise 28 ½ feet. When the tide is low, the St. John River, 450 miles long, empties into the bay. Between Fallsview Park and the Pulp Mill, the full flow of the river thunders through a narrow gorge. An underwater ledge, 36 feet below the surface causes the water in the river to tumble downward into a 175-200 foot deep pool. Below the mill and under the bridge. The water then boils in a series of rapids and whirlpools.