turismo ·
Waterfalls with flow of 3,342 m³/s: what to expect this week
Marco Três newsroom · edited by Annie GrellmannPortuguêsEspañol
The flow of the Iguaçu River is at 3,342 m³/s, almost 2.2 times the historic average of 1,500 m³/s.

Today's measurement indicates 3,342 m³/s (level 220 cm), which corresponds to 2.2 times the historic average of 1,500 m³/s – about 1.5 million liters per second, or roughly ≈ 1.3 Olympic-size swimming pools crashing per second. This flow is among the top 5% of values ever recorded in the Marco Três series (since June 2026), signaling a strong flood phase.
During intense floods, mist on the walkways increases and the water volume over the falls creates an even more impressive spectacle. Viewpoints remain open, but the final section of the Devil's Throat walkway may be temporarily closed for safety, according to the park’s decision on the day. Check the current status at /cataratas-hoje before you go.
The water may appear brown due to sediment carried by rain in the basin, which is natural and does not indicate dirt. Remember that the flood is unrelated to the Itaipu dam, which is on the Paraná River and does not control the Iguaçu flow.
What this means for you:
- Bring a raincoat and non-slip shoes, as the mist can make the path slippery.
- Plan to arrive early to secure tickets and avoid lines, since visits may be more crowded.
- Verify any closure of the final walkway on the official Iguazu Falls website before leaving home.
Source: Marco Três.
Read also: What to do in Foz do Iguaçu when it rains
Frequently asked questions
- Will the Devil's Throat walkway be closed?
- The decision to close or keep open the final section of the walkway depends on the park and should be checked at /cataratas-hoje on the day of the visit.
- Do I need to bring extra clothing because of the mist?
- Yes, the mist can wet clothing and shoes; a poncho or raincoat is advisable.
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Content verified by the newsroom based on an official source: Dados Marco Três · ANA. Last checked: 9/29/2026. Found something inaccurate? We fix it fast. How we work.
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