# Paraná River flooding in Paraguay and Argentina

> Live situation record from CLSTR: https://clstr.news/situations/paran-river-flooding-in-paraguay-and-argentina
> Updated: 2026-10-11T21:01:44.000Z. Sources: 113. Developments: 2.

Rising water levels in the Paraná River have triggered hydrological alerts in Paraguay and Argentina. To manage excess water, the Yacyretá Binational Entity opened its floodgates as levels approached critical thresholds. In Paraguay, monitoring by Itaipú Binacional indicated that rising river levels were causing backwater effects in the Acaraymí stream, threatening local residences.

As the situation progressed, intense rainfall and El Niño conditions necessitated further water management actions. The Yacyretá Binational Entity opened its main spillway gates to mitigate rising levels, resulting in high water in Ayolas, Paraguay, and Ituzaingó, Argentina. These hydrological shifts led to the preventive closure of the Ituzaingó-Ayolas international crossing and the suspension of tourism at the Iguazú Falls.

## Timeline

### 2026-10-11: Hydrological shifts trigger dam openings and water management changes

Regions face diverse water challenges: Yacyretá opens dam gates due to Paraná River flooding, Honduras implements cloud seeding and reduces water rationing, and Andalusia sees improved reservoir levels.

29 sources. https://clstr.news/cluster/water-reservoirs-reach-full-capacity-in-chile-and-guatemala

### 2026-10-04: Paraná River rising triggers hydrological alerts in Paraguay and Argentina

Hydrological alerts have been issued in Paraguay and Argentina as rising Paraná River levels threaten to flood residential areas and low-lying communities near the Itaipú and Yacyretá dams.

86 sources. https://clstr.news/cluster/weather-forecasts-for-monturi-los-llanos-de-aridane-and-calamonte

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Cite as: Paraná River flooding in Paraguay and Argentina. CLSTR, https://clstr.news/situations/paran-river-flooding-in-paraguay-and-argentina