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Storm drain grate on a street in Warsaw, Poland Storm drain with its pipe visible beneath it due to construction work. A storm drain, storm sewer (United Kingdom, U.S. and Canada), highway drain [1], surface water drain/sewer (United Kingdom), or stormwater drain (Australia and New Zealand) is infrastructure designed to drain excess rain and ground water from impervious surfaces such as paved ...
Hydrology in smaller drainage basins is governed by the degree of urbanization and impermeable, high-runoff surfaces. In the Don River Watershed in the Lake Ontario basin, urbanization of 15 percent of in 1950 is predicted to become 91 percent in 2021. [77] Average annual flows in the Don River have increased by 0.44% per year since the early ...
A volunteer storm spotter reported a tornado in the north part of the city but it was not confirmed by Environment Canada. [5] The rain washed out a portion of Finch Avenue near Sentinel Ave in North York. It overflowed storm drains which caused severe basement flooding to many thousands of homes and two floors of the MSC building.
Highway 407 was designed with aesthetics and environmental concerns in mind, featuring landscaped embankments, 79 storm drainage ponds, and a curb and gutter system. [19] Unlike most Ontario highways, it features concrete pavement as opposed to top-coated asphalt.
Stormwater, also written storm water, is water that originates from precipitation (storm), including heavy rain and meltwater from hail and snow. Stormwater can soak into the soil (infiltrate) and become groundwater, be stored on depressed land surface in ponds and puddles, evaporate back into the atmosphere, or contribute to surface runoff.
Don River (Ontario) Not to be confused with Don (river). The Don River is a watercourse in southern Ontario that empties into Lake Ontario, at Toronto Harbour. Its mouth was just east of the street grid of the town of York, Upper Canada, the municipality that evolved into Toronto, Ontario. The Don is one of the major watercourses draining ...
2011 Goderich, Ontario tornado. The 2011 Goderich, Ontario tornado was an F3 tornado generated by an isolated supercell which unexpectedly tore across Huron County, Ontario, Canada on the afternoon of Sunday, August 21, 2011. Beginning as a tornadic waterspout over Lake Huron, the tornado ripped through the lakeside town of Goderich severely ...
Daylighting (streams) The daylighted Saw Mill River in Getty Square, Yonkers, New York, had been covered by a parking lot. A short stretch of Lower Marin Creek in UC Village in Albany, California has been daylighted. Daylighting is the opening up and restoration of a previously buried watercourse, one which had at some point been diverted below ...