Iguazu Falls: water flow this week

The flow of the Iguaçu River, measured in cubic meters per second (m³/s - the volume of water passing each second), is 4,130 m³/s, with a level of 246 cm. For context: the long-term historic average flow at the Falls is about 1,500 m³/s, meaning that even with a decline, the river is at almost triple the normal volume, after the early-July flood that peaked at over 7,300 m³/s (and closed the Devil's Throat circuit on the Argentine side for a day). In the last seven days the flow ranged between 4,130 and 7,367 m³/s, with a downward trend of 12.7% for the week.

For those planning to visit Iguazu Falls, located on the Brazil-Argentina border, the flow directly influences the power and volume of the waterfalls: the higher the flow, the more intense and fuller the water curtains. When the flow is around 4,130 m³/s, the falls are still impressive but less voluminous than at peaks of 7,000 m³/s, which can make the experience more comfortable for visitors who prefer fewer splashes and shorter lines at the viewpoints.

The flow reduction usually occurs in the dry season, when rainfall in the Iguaçu basin is lower. Even so, the Falls remain open and safe for visitors, with the same operating hours and attractions such as the Macuco Safari boat ride and the Garganta trail.

What this means for you: With a flow of 4,130 m³/s, expect still-beautiful falls, but less voluminous and fewer splashes on boat tours; it’s a good time for those who want to avoid crowds and don’t mind a lower water force. Bring a light raincoat or poncho, though you may need less protection against heavy water.

Read also: What is the best time to see Iguazu Falls?