#981391. New Hampshire Great Bay Estuary Properties Seacoast New Hampshire waterfront real estate and homes for sale in Portsmouth, Dover, Durham, Greenland, New Castle, Newington, Newfields, Stratham, Madbury. A real estate resource center to find MLS listings, condos and homes for sale in towns and cities adjacent to the Great Bay Estuary. Greatbaynh.com~Site InfoWhoisTrace RouteRBL Check