This seaport on Casco Bay is the seat of Cumberland County
... is at the mouth of the Fore River and part of Casco Bay, and the Arts 
District, ... Portland became the primary ice-free winter seaport for Canadian 
exports... [DOC] [TLE] Cumberland County Republican Committee | Portland [PAR] Portland is the largest city in the state of Maine and the county seat of ... Old Port 
district along Portland Harbor, at the mouth of the Fore River and part of Casco 
Bay, ... Portland became the primary ice-free winter seaport for Canadian exports.