New pooling of water at construction site of Miami’s ‘deepest’ underground garage sparks new concern by area residents

Local 10 News reported on the alarm among Brickell residents over repeated groundwater upwelling at the Una Residences site — a 47-story luxury tower excavating what’s billed as Miami’s deepest underground garage near Biscayne Bay’s Manatee Park. Miami Waterkeeper Executive Director Rachel Silverstein explained the underlying challenge: “It is very difficult to do construction underground in South Florida because we have very porous limestone rock beneath us. We also happen to have a shallow water table.”