Cities along the Mississippi River are fighting emergencies on two fronts: Covid-19 is straining health-care systems and hitting tax revenue just as officials are faced with spring flooding and the coming hurricane season.

“We are dealing with some unprecedented times in local government to manage two disasters simultaneously,” said Sharon Weston Broome, mayor of Baton Rouge, La., and co-chair of the Mississippi River Cities and Towns Initiative, which represents about 100 mayors.

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