Översvämningar vid dammar i Michigan belyser risker med åldrande amerikansk infrastruktur

Rekordöversvämningar i förra månaden fick flera dammar i norra Michigan att närma sig ett totalt haveri, då vattennivån var nära att svämma över en viktig barriär i en av städerna. Händelserna har förnyat kraven på att åtgärda landets åldrande dammar i takt med att klimatförändringarna orsakar allt kraftigare stormar.

Översvämningar över hela norra Michigan i förra månaden fick floder att stiga till rekordnivåer. Vid Cheboygan Dam var vattennivån den 16 april bara 13 centimeter från att flöda över krönet, vilket fick myndigheterna att överväga evakueringar. I Bellaire placerade arbetare ut cirka 1 000 sandsäckar runt en hundra år gammal konstruktion för att förhindra översvämning.

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