Iguazú Falls Flood, October 2026: Devil's Throat Walkway Closed 11-30 October, Reopened 31 October

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One safety note first. The walkway closes on purpose when the river rises, and the park's own protocol is the reason. Do not go around a barrier or onto a path the operator lists as closed, and expect access to shut again if the flow climbs. Our guide to what park services tell visitors about waterfall safety covers the general rules; this article only reports what the operator published.

Three posts on the park's official news page carry the whole story, and all three are in Portuguese. Urbia+Cataratas manages tourism at the park; the park itself is administered by ICMBio, Brazil's federal biodiversity agency, according to the operator's own boilerplate. We read the three posts on 12 November, as raw page text rather than through a summary tool, and every figure below comes from one of them.

The first, dated 13 October, explains the safety protocol while the flood was rising. It says the walkway had been closed since Sunday 11 October, and that the river reached 11.8 million liters per second on the morning of Monday 12 October, the largest volume recorded up to then in 2026, in the operator's words. On Tuesday 13 October it gave 10.5 million and a forecast that flow could reach 13 million in the following hours.

The second, dated 26 October, is the peak notice: 17.7 million liters per second in the early hours of that Monday, already falling to about 16 million by the morning. The operator headlined it as the largest volume of the year and invited visitors to come and see the high flow. We report that invitation as the operator's, not ours, and the next section of this article is about what it actually kept open.

The third, dated 31 October, is the reopening. It says the walkway, which leads to the Devil's Throat viewpoint (the main drop on the Brazilian side), reopened at 10:00 on Saturday 31 October after the river fell back and specialists assessed the structure and reinstalled the guardrails. That order matters: the guardrails had been taken down during the flood, so reopening was a rebuild as much as a lifting of a closure.

The table below puts the operator's figures in one place. We only include a row when one of the three posts states the date, the flow and the status together, so some days have no row. The gaps are real: the operator did not publish a daily series, and neither do we.

Read as a sequence, the closure has three phases. The walkway shut on 11 October, before the biggest numbers arrived. The river then kept climbing for two weeks and peaked on 26 October, which is also the day the operator said reopening depended on the river's condition and on a technical assessment of the structure. And the reopening came five days after the peak, once the flow had fallen to well under half of it.

Our translation: the walkway was closed when the river reached 8.5 million liters per second, and it reached 17.7 million on Monday the 26th. The same post is the clearest single statement of the closure window: the structure went through a closure after the Iguaçu River's flow rose between 11 and 30 October. Counting both end days, that is 20 days. Nothing in the posts says how many visitors were turned away or what was refunded, so this article says nothing about either.

A million liters per second is 1,000 cubic meters per second, so the October peak was about 17,700 m³/s (roughly 625,000 cubic feet per second, our conversion). The operator compares it with a historical average of 1.5 million liters per second, which is 1,500 m³/s. These are the operator's numbers; the posts do not name the gauge or the method behind them, so we cannot say how they compare with figures from a hydrological agency.

The operator's own comparison is that the flow corresponds to 11 times the historical average. Our arithmetic gives a slightly different picture. 17.7 divided by 1.5 is 11.8, while the roughly 16 million quoted for that Monday morning gives 10.7, which rounds to 11. The post does not say which figure it used, so the safest reading is "about 11 times, give or take, on the operator's numbers", and we would not quote a more exact ratio.

We do not call this a record. The operator's headline calls it the largest volume of the year and says nothing more, and a single year is all the three posts claim. Comparisons with other floods would need a long series from a gauge, and we did not read one for this piece. For how water levels at big falls are usually read, our guide on when a waterfall has water explains the basics.

The operator's two pages do not give the same number, and both are worth reading closely. The protocol post of 13 October says that when the flow passes 8.5 million liters per second and shows a rising trend, the walkway is closed as a precaution. The reopening post of 31 October says that, under its operating procedures, the need for a precautionary closure is assessed when the flow reaches 8 million liters per second, again with a rising trend.

These need not contradict each other. One reading is that 8 million is when staff start to evaluate and 8.5 million is when the closure is ordered. The posts do not say that, so it stays a reading and not a fact. The reopening post also says the walkway was closed when the river reached 8.5 million, which matches the protocol. What we can say is what the operator wrote, with the date of each page.

The last row is deliberate. The protocol post ties reopening to a flow figure in a sentence we could not read as a clear threshold, so we left the number out. What is clear is the second half: reopening depends on a technical assessment and on an engineer's authorization, which is consistent with the reinstalled guardrails in the 31 October post.

The practical consequence is simple. A closure does not wait for the peak: the walkway closed on 11 October, two weeks before the maximum. And it is the operator's call, by hour, on its own readings. Treat any figure on this page as a description of how the operator says it works, never as a promise that the walkway will be open below a number or closed above it.

On the peak day the operator listed what was shut and what was not. Closed because of the high flow: the walkway, the Circuito São João, the Espaço Usina and the Caminho do Poço Preto. Closed for works: the Caminho das Bananeiras. Available: the Trilha das Cataratas, the Trilha da Canafístula and the cycle path. It added that the main viewpoints on the Trilha das Cataratas stayed open.

Compare that with the 13 October list, when the flood was still rising. The Trilha da Canafístula was on the closed list then, together with the lower viewpoint at Espaço Naipi, and by 26 October the Canafístula was listed as available. So the list moves, in both directions, within days. A list read in the third week of October does not describe the first week, and neither describes today.

We say this only to explain what the operator published. We are not recommending any path: whether a path is open on the day you arrive is the operator's call and it can change with the river. If a path is marked closed, it is closed.

On 12 November the park's news page listed, as its most recent posts about the river, the 31 October reopening and the 26 October peak notice. We found no later closure notice there. That is the absence of a notice on one page on one day, not a live status. A river that took the walkway offline once can do it again, and the page may not be updated before the gates do.

The reopening post also states the park's hours as of 31 October: open every day, Monday to Friday from 9:00 to 16:00 and weekends from 8:30 to 16:00, with an 8:00 opening over the All Souls long weekend, and it recommends buying tickets in advance on the official site. Hours change by season and by holiday, so check the current times when you buy.

For the general routine, see our guide on how to check closures and water levels. If you are comparing ways to see the falls, our Iguazú Falls tour page lists the options that currently exist. We did not read a source for the Argentine side for this piece, so it says nothing about the Argentine park.

We read the three posts below on 12 November 2026 as raw page text and checked each figure, date and threshold against the Portuguese original. Translations are ours. We also read the park's news index to see whether a later notice existed. We did not read live flow data, and we did not read any source for the Argentine side.

• Passarela reabre para visitação, Urbia+Cataratas, 31 October 2026
• Passarela interditada: entenda o protocolo de segurança, Urbia+Cataratas, 13 October 2026
• Cataratas registram o maior volume do ano, Urbia+Cataratas, 26 October 2026
• News index, Cataratas do Iguaçu, read 12 November 2026

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