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25-585: Following a trade route that Indigenous people used from the Davenport Trail to Lake Iroquois , this route formed the path of a railway that started in 1871. In 1868, the Toronto, Grey and Bruce Railway was incorporated to provide rail service connecting Toronto to Southampton and Owen Sound (and points in between). Sections of this railway in Toronto ran along the rights of way of other existing railways. As this railway

50-420: A lake formed either by the damming action of a moraine during the retreat of a melting glacier , a glacial ice dam, or by meltwater trapped against an ice sheet due to isostatic depression of the crust around the ice. At the end of the last ice age about 10,000 years ago, large proglacial lakes were a widespread feature in the northern hemisphere. The receding glaciers of the tropical Andes have formed

75-419: A lease that a salvage yard (M&S Waste and Salvage) had for a portion of the land, leased when the land was owned by Canadian Pacific. Construction of Phase 1 of the path, running from Cariboo Avenue to Dundas Street West and Sterling Road, was designed by Scott Torrance Landscape Architect Inc. in conjunction with Brown and Storey Architects, and began in 2008 and was completed in 2009. The project combined

100-557: A number of proglacial lakes, especially in the Cordillera Blanca of Peru, where 70% of all tropical glaciers are. Several such lakes have formed rapidly during the 20th century. These lakes may burst, creating a hazard for zones below. Many natural dams (usually moraines ) containing the lake water have been reinforced with safety dams. Some 34 such dams have been built in the Cordillera Blanca to contain proglacial lakes. Several proglacial lakes have also formed in recent decades at

125-596: A potential trigger for the Younger Dryas episode. Two ancient shorelines in the Toronto area mark the existence of former glacial lakes. About 2 km inland from the shore, a ridge known as the Iroquois Shoreline can be discerned. The old shoreline runs west-east, running roughly parallel to Davenport Road just south of St. Clair Avenue West. Further east, the Scarborough Bluffs also formed part of

150-531: Is 2.1 km long, beginning at Cariboo Avenue and running southeast to Dundas Street West and Sterling Road. The contract for Phase 1 construction was awarded in April 2008 at a cost of (CDN) $ 3.8 million. Construction began in 2008 and was completed in summer 2009, with the formal opening on October 30, 2009. Phase 2 will continue a further 2 km from Dundas Street West and Sterling Road southeast and east to Strachan Avenue and Wellington Street, providing access to

175-828: Is a partial list of rivers that had glacial ice dams. The retreating glaciers of the last ice age, both depressed the terrain with their mass and provided a source of meltwater that was confined against the ice mass. Lake Algonquin is an example of a proglacial lake that existed in east-central North America at the time of the last ice age . Parts of the former lake are now Lake Huron , Georgian Bay , Lake Superior , Lake Michigan and inland portions of northern Michigan. Examples in Great Britain include Lake Lapworth , Lake Harrison and Lake Pickering . Ironbridge Gorge in Shropshire and Hubbard's Hills in Lincolnshire are examples of

200-461: Is an underwater bluff. In Hamilton, Ontario the Burlington Heights represents a sand and gravel bar formed across the mouth of Cootes Paradise , at the western end of Glacial Lake Iroquois. In New York , Ridge Road and New York State Route 104 run from west to east along a ridge of the old shoreline of Lake Iroquois. Proglacial lake In geology, a proglacial lake is

225-564: The Metrolinx 's Georgetown South Project , a planned expansion of rail capacity along the line for GO Transit and the existing Union Pearson Express . In total, the railpath is proposed to run about 4 km from Cariboo Avenue in The Junction to Strachan Avenue near the downtown core (see map ). Like other rail trail projects, the path runs along railway rights-of-way established many years ago that have been narrowed or abandoned. Phase 1

250-587: The United States, the sudden rupturing of the supporting dam caused glacial lake outburst floods , the rapid and catastrophic release of dammed water resulting in the formation of gorges and other structures downstream from the former lake. Good examples of these structures can be found in the Channeled Scablands of eastern Washington, an area heavily eroded by the Missoula Floods . The following table

275-625: The Viceroy plant and the scrapyard. The City of Toronto Economic Development and Parks Committee and grassroots community support began for this project before 1990, but the project necessitated the purchase of land and negotiations with rail operators and other stakeholders. Organizations involved include the Evergreen Foundation and, although the railpath is multi-use, notable advocacy by bicycling interests such as Toronto's Community Bicycle Network . The City of Toronto first authorized purchase of

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300-594: The Wellington Street bicycle lane, near the Liberty Village development. Rail line capacity expansion projects by Metrolinx could potentially conflict with Phase 2. Toronto City Council continues to support the railpath. Metrolinx has indicated that it will work with the railpath's advocates to try to include the path as part of the Georgetown South expansion plans. The West Toronto Railpath Extension Study

325-593: The coast of Alaska. A similar event takes place after irregular periods in the Perito Moreno Glacier , located in Patagonia . Roughly every four years the glacier forms an ice dam against the rocky coast, causing the waters of the Lago Argentino to rise. When the water pressure is too high, then the giant bridge collapses in what has become a major tourist attraction. This sequence occurred last on 4 March 2012,

350-459: The end of glaciers on the eastern side of New Zealand's Southern Alps . The most accessible, Lake Tasman , hosts boat trips for tourists. On a smaller scale, a mountain glacier may excavate a depression forming a cirque , which may contain a mountain lake, called a tarn , upon the melting of the glacial ice. The movement of a glacier may flow down a valley to a confluence where the other branch carries an unfrozen river. The glacier blocks

375-481: The ice dam and exploded downstream, flowing at a rate 10 times the combined flow of all the rivers of the world. Because such ice dams can re-form, these Missoula Floods happened at least 59 times, carving Dry Falls below Grand Coulee . In some cases, such lakes gradually evaporated during the warming period after the Quaternary ice age. In other cases, such as Glacial Lake Missoula and Glacial Lake Wisconsin in

400-610: The land for the portion from Cariboo Avenue to Dundas Street West (known as the CP LEAD spur) in 1997. Funds to the amount of $ 920,000 were approved in 2000. This land was acquired in July 2003 by the City of Toronto from the St. Lawrence and Hudson Railway . The purchase agreement demanded that the vendor remediate the soil to industrial standards. After acquiring the lands, the City of Toronto needed to terminate

425-660: The previous having taken place four years before, in July 2008. About 13,000 years ago in North America, the Cordilleran Ice Sheet crept southward into the Idaho Panhandle , forming a large ice dam that blocked the mouth of the Clark Fork River , creating a massive lake 2,000 feet (600 m) deep and containing more than 500 cubic miles (2,000 km ) of water. Finally this Glacial Lake Missoula burst through

450-513: The restoration of historical rail bridges with the installation of new public art pieces by artist John Dickson, all situated among indigenous planting. New entrance points at Dupont and Bloor streets allow pedestrians to access the trail from the street and use the restored rail bridges that cross over these streets. Concrete plazas are located along the trail where existing streets intersect it, providing neighbourhood connections and gathering places. The realization of Phase 2 will be coordinated with

475-529: The river, which backs up into a proglacial lake, which eventually overflows or undermines the ice dam, suddenly releasing the impounded water in a glacial lake outburst flood also known by its Icelandic name a jökulhlaup . Some of the largest glacial floods in North American history were from Lake Agassiz . In modern times, the Hubbard Glacier regularly blocks the mouth of Russell Fjord at 60° north on

500-519: The shoreline of the ancient lake. In Mississauga , the shoreline is found south of Dundas Street and most visible with hills found east and west of Mavis Road. Another ancient shoreline exists between 2–4 km offshore of Toronto. It is known as the Toronto Scarp and formed the shore of Glacial Lake Warren or Admiralty Lake . From Bluffer's Park in Scarborough to just west of Hanlan's Point

525-531: The valley of the Mohawk River to the Hudson River . The lake was fed by Early Lake Erie , as well as Glacial Lake Algonquin , an early partial manifestation of Lake Huron , that drained directly to Lake Iroquois across southern Ontario , along the southern edge of the ice sheet, bypassing Early Lake Erie. The subsequent melting of the ice dam resulted in a sudden lowering of the lake to its present level,

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550-468: Was a different (narrower) gauge, a separate set of tracks was required along the right of way. Due to service problems associated with the narrow gauge, the line was eventually converted to standard gauge in 1881. By 1883, the Canadian Pacific Railway had acquired the line. Into the 1960s, the portion of the track around Dupont was known as "The Old Bruce". It served several industries, including

575-559: Was completed and approved by Toronto City Council in January 2016 and included the functional design of the extension. In August 2016, the federal government announced funding, in partnership with the province, for detailed design and implementation with design work planned to commence in September 2016. Public consolation and feedback was completed in March 2020 and construction of the phase 2 extension

600-518: Was essentially an enlargement of the present Lake Ontario that formed because the St. Lawrence River downstream from the lake was blocked by the ice sheet near the present Thousand Islands . The level of the lake was approximately 30 m (~100 ft) above the present level of Lake Ontario. The lake drained to the southeast, through a channel passing near present day Rome, New York . The Rome Sand Plains has several sand ridges that geologists think were formed at this time. The channel then followed

625-441: Was expected to begin in 2021 or 2022. Construction has been repeatedly delayed and, as of February 2024 is stated as planned to begin in 2024. 43°39′40″N 79°27′14″W  /  43.66118°N 79.45377°W  / 43.66118; -79.45377 Glacial Lake Iroquois Glacial Lake Iroquois was a prehistoric proglacial lake that existed at the end of the last ice age approximately 13,000 years ago. The lake

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