受超级厄尔尼诺现象引发的强降雨影响，阿根廷当局周一临时关闭了伊瓜苏瀑布景区1。伊瓜苏河水位急剧上升至每秒12000立方米，超过平均流量的6倍以上1，存在河水决堤风险。阿根廷国家公园主任何塞·玛丽亚·埃瓦斯表示，关闭决定是由于"持续降雨"和上游大坝泄水流量未见明显下降1。公园官员预计周二将重新开放，因河流流量逐渐下降1。
伊瓜苏瀑布跨越约2700米，位于阿根廷和巴西边界处，被联合国教科文组织认定为世界上最大和最壮观的瀑布之一1。2023年和2024年，阿根廷曾因前一个厄尔尼诺周期导致的洪水关闭过公园1。气象学家预测2026年至2027年期间的厄尔尼诺将是有记录以来最大的1，科学家认为人为全球升温正在加剧厄尔尼诺现象的强度1。
Argentine authorities closed Iguazu Falls to visitors on Monday as water levels in the Iguazu River surged dramatically due to heavy rainfall fueled by the El Niño phenomenon 1. The river's flow rate exceeded 12,000 cubic meters per second, more than six times the average volume, prompting concerns about potential dam overflow 1. José María Evas, director of the Argentine national park, attributed the closure to continued rainfall and undiminished water discharge from upstream dams 1. Park officials announced the site would reopen on Tuesday as river flow was expected to decline 1.
The Iguazu Falls, straddling approximately 2,700 meters along the border between Argentina and Brazil, is recognized by UNESCO as one of the world's largest and most spectacular waterfalls 1. Argentina has previously closed the park due to flooding linked to El Niño cycles in 2023 and 2024 1. Scientists have warned that the El Niño phenomenon anticipated for 2026–2027 could be the largest on record, while experts attribute the intensifying severity of such weather events partly to anthropogenic global warming 1.
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