query: mouth_of_the_watercourse french river 
supports: Ontario, one of the 13 provinces and territories of Canada, is located in east-central Canada. It is Canada's most populous province by a large margin, accounting for nearly 40 percent of all Canadians, and is the second-largest province in total area. Ontario is fourth-largest in total area when the territories of the Northwest Territories and Nunavut are included. It is home to the nation's capital city, Ottawa, and the nation's most populous city, Toronto. Mean sea level (MSL) (abbreviated simply sea level) is an average level of the surface of one or more of Earth's oceans from which heights such as elevations may be measured. MSL is a type of vertical datuma standardised geodetic reference pointthat is used, for example, as a chart datum in cartography and marine navigation, or, in aviation, as the standard sea level at which atmospheric pressure is measured in order to calibrate altitude and, consequently, aircraft flight levels. A common and relatively straightforward mean sea-level standard is the midpoint between a mean low and mean high tide at a particular location. The French River ( French : '' Rivière des Français '' ) is a river in Central Ontario , Canada . It flows 110 kilometres ( 68 mi ) from Lake Nipissing west to Georgian Bay . The river largely follows the boundary between the Parry Sound District and the Sudbury District , and in most contexts is considered the dividing line between Northern Ontario and Southern Ontario . The French River was designated a Canadian Heritage River in 1986 . An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island in a river or a lake island may be called an eyot or ait, and a small island off the coast may be called a holm. A grouping of geographically or geologically related islands is called an archipelago, e.g. the Philippines. Manitoulin Island (originally Ekaentouton) is a Canadian lake island in Lake Huron, in the province of Ontario. It is the largest freshwater lake island in the world. In addition to the historic Anishinaabe and European settlement of the island, archeological discoveries at Sheguiandah have demonstrated Paleo-Indian and Archaic cultures dating from 10,000 BC to 2000 BC. Ottawa is the capital city of Canada. It stands on the south bank of the Ottawa River in the eastern portion of southern Ontario. Ottawa borders Gatineau, Quebec; the two form the core of the OttawaGatineau census metropolitan area (CMA) and the National Capital Region (NCR). The 2011 census reported a population of 883,391, making it the fourth-largest city in Canada; and 1,236,324 within the CMA, making it the fourth-largest CMA in Canada. The City of Ottawa reported that the city had an estimated population of 960,754 as of December 2015. The Great Lakes (also called the Laurentian Great Lakes, or the Great Lakes of North America) are a series of interconnected freshwater lakes located primarily in the upper mid-east region of North America, on the CanadaUnited States border, which connect to the Atlantic Ocean through the Saint Lawrence River. Consisting of Lakes Superior, Michigan, Huron (or MichiganHuron), Erie, and Ontario, they form the largest group of freshwater lakes on Earth, containing 21% of the world's surface fresh water by volume. The total surface is , and the total volume (measured at the low water datum) is . Due to their sea-like characteristics (rolling waves, sustained winds, strong currents, great depths, and distant horizons) the five Great Lakes have also long been referred to as "inland seas". Lake Superior is the second largest lake in the world by area, and Lake Michigan is the largest lake that is entirely within one country. The southern half of the Great Lakes is bordered by the Great Lakes Megalopolis. The Bruce Peninsula is a peninsula in Ontario, Canada, that lies between Georgian Bay and the main basin of Lake Huron. The peninsula extends roughly northwestwards from the rest of Southern Ontario, pointing towards Manitoulin Island, with which it forms the widest strait joining Georgian Bay to the rest of Lake Huron. The Bruce Peninsula contains part of the geological formation known as the Niagara Escarpment. The Ottawa River (Algonquin: "Kitchissippi"), is a river in the Canadian provinces of Ontario and Quebec. For most of its length, it defines the border between these two provinces. It is a major tributary of the St. Lawrence River. Georgian Bay (French: "Baie Georgienne") is a large bay of Lake Huron, located entirely within Ontario, Canada. The main body of the bay lies east of the Bruce Peninsula and Manitoulin Island. To its northwest is the North Channel. Canada (French: ) is a country in the northern half of North America. Its ten provinces and three territories extend from the Atlantic to the Pacific and northward into the Arctic Ocean, covering , making it the world's second-largest country by total area and the fourth-largest country by land area. Canada's border with the United States is the world's longest land border. The majority of the country has a cold or severely cold winter climate, but southerly areas are warm in summer. Canada is sparsely populated, the majority of its land territory being dominated by forest and tundra and the Rocky Mountains. About four-fifths of the country's population of 36 million people is urbanized and live near the southern border. Its capital is Ottawa, its largest city is Toronto; other major urban areas include Montreal, Vancouver, Calgary, Edmonton, Quebec City, Winnipeg and Hamilton. Southern Ontario is a primary region of the province of Ontario, Canada, the other primary region being Northern Ontario. It is the most densely populated and southernmost region in Canada. Situated south of Algonquin Park, it covers between 14 and 15% of the province, depending on the inclusion of the Parry Sound and Muskoka districts. The region is home to one-third of Canada's population. Lake Nipissing is a lake in the Canadian province of Ontario. It has a surface area of , a mean elevation of above sea level, and is located between the Ottawa River and Georgian Bay. Excluding the Great Lakes, Lake Nipissing is the third-largest lake in Ontario. It is relatively shallow for a large lake, with an average depth of only . The shallowness of the lake makes for many sandbars along the lake's irregular shoreline. The lake has many islands most of which are protected under the Protection of Significant Wetlands scheme, controlled by the Ministry of Natural Resources and Forestry. Northern Ontario is a primary geographic and administrative region of the Canadian province of Ontario; the other primary region being Southern Ontario. The geographic region lies north of Lake Huron (including Georgian Bay), the French River, Lake Nipissing, and the Mattawa River, while the administrative region has several boundaries further south that vary according to federal and provincial government policies and requirements, such as a part of Nipissing District that lies south of the Mattawa River. Edmonton is the capital city of the Canadian province of Alberta. Edmonton is on the North Saskatchewan River and is the centre of the Edmonton Capital Region, which is surrounded by Alberta's central region. Calgary is a city in the Canadian province of Alberta. It is situated at the confluence of the Bow River and the Elbow River in the south of the province, in an area of foothills and prairie, about east of the front ranges of the Canadian Rockies. In the 2011 census, the City of Calgary had a population of 1,096,833 and a metropolitan population of 1,214,839, making it the largest city in Alberta, and the third-largest municipality and fifth-largest census metropolitan area (CMA) in Canada. The Ministry of Natural Resources and Forestry (MNRF) is a government ministry of the Canadian province of Ontario that is responsible for Ontarios provincial parks, forests, fisheries, wildlife, mineral aggregates and the Crown lands and waters that make up 87 per cent of the province. Its offices are divided into Northwestern, Northeastern and Southern Ontario regions with the main headquarters in Peterborough, Ontario. Lake Huron is one of the five Great Lakes of North America. Hydrologically, it comprises the easterly portion of Lake MichiganHuron, having the same surface elevation as its westerly counterpart, to which it is connected by the , Straits of Mackinac. It is shared on the east by the Canadian province of Ontario and on the west by the state of Michigan in the United States. The name of the lake is derived from early French explorers who named it for the Huron people inhabiting the region.
  The Huronian glaciation was named due to evidence collected from Lake Huron region. The northern parts of the lake include the North Channel and Georgian Bay. The main inlet is the St. Marys River and the main outlet is the St. Clair. The Mattawa River is a river in central Ontario, Canada. It flows east from Trout Lake east of North Bay and enters the Ottawa River at the town of Mattawa. Counting from the head of Trout Lake, it is 76 km in length. The river's name comes from the Algonquin word for "meeting of waterways".
candidates: arctic ocean atlantic ocean bow river french river georgian bay isle lake huron lake nipissing lake superior main ottawa river saskatchewan river sea
answer: lake huron