Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== Lake Ontario ====== {{:geography:lake_ontario.jpg?500|Lake Ontario, the easternmost of the Great Lakes}} **Lake Ontario** is the easternmost and smallest by surface area of the five Great Lakes of North America. Shared by the United States and [[country:canada|Canada]], the lake forms part of the international border and serves as the final Great Lake in the Great Lakes–St. Lawrence water system before water flows into the Atlantic Ocean. Lake Ontario receives water from the upper Great Lakes through the **Niagara River** and discharges through the **St. Lawrence River**, making it a critical link between the Great Lakes and the Atlantic Ocean. The lake has played a major role in transportation, settlement, commerce, military history, hydroelectric power generation, and international trade. Major cities on its shores include Toronto, Hamilton, Kingston, Rochester, and Oswego. --- ===== Quick Facts ===== ^ Attribute ^ Information ^ | Type | Great Lake | | Surface Area | Approximately 7,340 sq mi (19,000 km²) | | Length | Approximately 193 miles (311 km) | | Maximum Width | Approximately 53 miles (85 km) | | Maximum Depth | Approximately 802 feet (244 m) | | Average Depth | Approximately 283 feet (86 m) | | Inflow | Niagara River | | Outflow | St. Lawrence River | | Countries | United States, [[country:canada|Canada]] | | Known For | Shipping, St. Lawrence Seaway, Hydroelectric Power | --- ===== Geography ===== Lake Ontario lies between: * New York * Ontario, [[country:canada|Canada]] The lake receives water from: * Niagara River * Genesee River * Oswego River * Trent River Water exits through: * St. Lawrence River which eventually reaches: * Atlantic Ocean Lake Ontario is the lowest Great Lake by elevation and the final collection point for water flowing from: * [[geography:lake_superior|Lake Superior]] * [[geography:lake_michigan|Lake Michigan]] * [[geography:lake_huron|Lake Huron]] * [[geography:lake_erie|Lake Erie]] --- ===== Name Origin ===== The name **Ontario** derives from an Indigenous word often translated as: * "Great Lake" * "Beautiful Lake" * "Sparkling Water" The term originates from the languages of Indigenous peoples who inhabited the region prior to European settlement. The name was later applied to both the lake and the Canadian province of Ontario. --- ===== Formation ===== Like the other Great Lakes, Lake Ontario was formed during the retreat of continental glaciers approximately 12,000 years ago. Glacial activity carved deep basins that later filled with meltwater. Lake Ontario is significantly deeper than: * [[geography:lake_erie|Lake Erie]] and contains a large volume of freshwater despite its smaller surface area. --- ===== Indigenous History ===== For thousands of years, the lake was home to numerous Indigenous peoples including: * Haudenosaunee (Iroquois) * Huron-Wendat * Mississaugas * Anishinaabe communities The lake served as: * Transportation route * Fishing ground * Trade corridor * Cultural center The shoreline became an important component of regional Indigenous trade networks. --- ===== European Exploration ===== French explorers reached Lake Ontario during the seventeenth century. The lake quickly became important for: * Fur trade commerce * Missionary activity * Colonial expansion * Military operations French and British forces both recognized the strategic importance of controlling access to the Great Lakes system. Several forts were constructed along the shoreline. --- ===== Colonial & Military History ===== Lake Ontario played a major role during: * French and Indian War * American Revolutionary War * War of 1812 Control of the lake provided access to transportation routes and military supply lines throughout northeastern North America. Several naval engagements occurred on Lake Ontario during the War of 1812. --- ===== St. Lawrence River ===== The lake's sole natural outflow is the: * St. Lawrence River This river forms one of North America's most important transportation corridors. The St. Lawrence ultimately carries Great Lakes water to: * Gulf of St. Lawrence * Atlantic Ocean making Lake Ontario the final Great Lake before the ocean. --- ===== St. Lawrence Seaway ===== One of Lake Ontario's most important economic features is its connection to the: * St. Lawrence Seaway Opened in 1959, the seaway allows oceangoing vessels to travel between the Atlantic Ocean and the Great Lakes. The system transformed international trade throughout North America. --- ===== Hydroelectric Power ===== Lake Ontario and the Niagara River support major hydroelectric facilities. Important projects include: * Sir Adam Beck Hydroelectric Generating Stations * Robert Moses Niagara Power Plant These facilities generate substantial amounts of renewable electricity for both Canada and the United States. --- ===== Major Cities ===== Important communities along Lake Ontario include: * Toronto * Hamilton * Kingston * Rochester * Oswego The lake supports one of the most densely populated regions in North America. --- ===== Fisheries ===== Lake Ontario supports important recreational and commercial fisheries. Common species include: * Chinook Salmon * Coho Salmon * Lake Trout * Brown Trout * Steelhead * Smallmouth Bass Sport fishing contributes significantly to the regional economy. --- ===== Recreation ===== Popular recreational activities include: * Boating * Sailing * Fishing * Swimming * Kayaking * Beach recreation * Wildlife viewing The lake attracts millions of visitors annually. --- ===== Wildlife ===== The Lake Ontario ecosystem supports: * Migratory waterfowl * Bald Eagles * Osprey * Shorebirds * Freshwater fish species Its wetlands and shoreline habitats are important components of the Atlantic migratory flyway. --- ===== Economic Importance ===== Lake Ontario supports: * International shipping * Manufacturing * Hydroelectric power * Tourism * Commercial fishing * Agriculture Its connection to the St. Lawrence Seaway makes it one of the most economically important freshwater bodies in the world. --- ===== Notable Features ===== * Niagara River * St. Lawrence River * St. Lawrence Seaway * Toronto Harbour * Thousand Islands Region * Major Hydroelectric Facilities --- ===== See Also ===== * [[geography:lake_erie|Lake Erie]] * [[geography:lake_huron|Lake Huron]] * [[geography:lake_superior|Lake Superior]] * [[country:canada|Canada]] * St. Lawrence Seaway * St. Lawrence River --- ===== References ===== * [Great Lakes Commission](https://www.glc.org?utm_source=chatgpt.com) * [NOAA Great Lakes Environmental Research Laboratory](https://www.glerl.noaa.gov?utm_source=chatgpt.com) * [Environment and Climate Change Canada](https://www.canada.ca/en/environment-climate-change.html?utm_source=chatgpt.com) * Great Lakes Fishery Commission * Encyclopedia Britannica * Library of Congress {{tag>geography lake_ontario great_lakes canada new_york st_lawrence_seaway niagara_river shipping hydropower freshwater}} geography/lake_ontario.txt Last modified: 2026/06/01 13:14by admin