North Bay is a city in Northeastern Ontario, Canada. It is the seat of Nipissing District, and takes its name from its position on the shore of Lake Nipissing. North Bay is located approximately 330 kilometres (210 mi) north of Toronto, and differs in geography from Southern Ontario in that North Bay is situated on the Canadian Shield. This gives rise to a different and more rugged landscape. North Bay is geographically unique in that it straddles both the Ottawa River watershed to the east and the Great Lakes Basin to the west. The city's urban core is located between Lake Nipissing and the smaller Trout Lake. North Bay, critically situated at the junctions of Highway 11 and Highway 17, remains a major transportation centre for Northern Ontario. It is the southern terminus of the Ontario Northland Railway, and is served by the Jack Garland Airport.