Please share this article - Go to very top of page, right hand side, for social media buttons. This downtown core is where the Army Corps of Engineers plans to build a US$6 billion sea wall, 20 feet high in places, through downtown neighborhoods and right between the Brickell district’s high-rises and the bay. There’s no question that the city is at increasing risk of flooding as sea level rises and storms intensify with climate change. A hurricane as powerful as 1992’s Andrew or 2017’s Irma making a direct hit on Miami would devastate the city. Miami and Miami Beach were built right up to the waterfront, with little room for nature.