Boston Harbor, photo by Tom Richardson, New Englnand Boating.

Boston Harbor, photo by Tom Richardson, New Englnand Boating.

BostonGlobe.com: Boston’s effort to redevelop its waterfront is running into a major obstacle: Water.

From downtown to East Boston to Dorchester, rising sea levels are posing an increasingly urgent threat to developers’ plans to build hundreds of homes, offices, stores, and parks along Boston Harbor, with many acknowledging the need to reinforce existing properties and redesign new ones in case of flooding from another Hurricane Sandy-like storm.

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BostonGlobe.com