Where any river, watercourse or bay lies between any counties or any cities, or any county and city in this Commonwealth, the district courts therein, on each side, respectively, shall have concurrent territorial jurisdiction over so much thereof as shall be opposite to such counties and cities. And such courts for counties or cities lying on the waters bounding the Commonwealth shall have concurrent territorial jurisdiction respectively over such waters opposite such counties and cities, as far as the jurisdiction of this Commonwealth extends. But this section shall not apply to the City of Richmond.