美国有 4,000 座水坝状况不佳，因基础设施老化和气候变化引发的洪水而带来风险。 4,000 US dams in poor condition pose risks due to aging infrastructure and climate change-driven flooding.

美国大坝安全受到洪水和水土流失日益恶化的威胁：至少有 4,000 座状况不佳或不令人满意的大坝可能带来风险，美国有 90,000 座重要大坝需要检查、升级和紧急修复。 US dam safety under threat from worsening floods and deterioration: At least 4,000 dams in poor or unsatisfactory condition could pose risks, with 90,000 significant dams in the US requiring inspections, upgrades, and emergency repairs. 老化的基础设施和气候变化导致的极端天气加剧了脆弱性。 Ageing infrastructure and extreme weather driven by climate change heighten vulnerability.