Tidal bore - A phenomenon created by the extreme tides of the Bay of Fundy which actually reverses the downstream flow of the Petitcodiac River at high tide. A causeway to Riverview was built in the 1960s, which has significantly diminished the effects of the bore. Efforts are underway to have the causeway replaced by a bridge in order to restore the river flow but there is a great amount of opposition from land owners on "Lake Petitcodiac" (the recreational headpond created on the western side of the causeway), who fear that their property values will plummet as a result.