Overview
- Park authorities in Argentina and Brazil restricted access to key circuits and walkways at Iguazú Falls after the Iguazú River rose above 12,000 cubic meters per second, with the measures announced for Wednesday to protect visitors and infrastructure.
- Brazilian managers removed protective railings from a suspended walkway so floodwaters could pass without dragging the structure away while Argentina kept some visitor services open under limits, including the Gran Aventura boat excursion.
- The Instituto Nacional del Agua has warned of new rises moving through the Plata Basin and is keeping towns such as Puerto Iguazú, Andresito, Ituzaingó, Paso de los Libres, Concordia, Colón and Concepción del Uruguay under watch.
- Operators at the Yacyretá dam opened spillways to regulate reservoir levels as river inflows climbed, a standard reservoir-control step that can change downstream flow patterns and requires local preparedness.
- The Servicio Meteorológico Nacional says El Niño remains in a strong phase through October, November and December 2026, which raises the likelihood of additional heavy-rain pulses and extended flood risk for the region.