Portland is a community located in Eastern Ontario within the township of Rideau Lakes in the United Counties of Leeds and Grenville. It is north of Kingston and situated on Big Rideau Lake.Portland was first settled in the early nineteenth century as one of the first settlements along the Rideau Waterway. With the completion of the Rideau Canal Waterway in 1832, steamboats and barges carried raw materials such as cordwood, maple syrup, potash, cheese,...