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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.
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 ...
Flash flood. A flash flood is a rapid flooding of low-lying areas: washes, rivers, dry lakes and depressions. It may be caused by heavy rain associated with a severe thunderstorm, hurricane, or tropical storm, or by meltwater from ice or snow flowing over ice sheets or snowfields. Flash floods may also occur after the collapse of a natural ice ...
The storm produced 22 inches (55 cm) of snow in Chicago and was rated by the National Weather Service as the second worst blizzard to hit Chicago in the 20th century, after the Blizzard of 1967. Soon after the snow ended, record low temperatures occurred with values of −20 °F (−29 °C) or lower in parts of Illinois and surrounding states ...
Some of that rain will fall within a couple of hours and can overwhelm storm drains, leading to flash street and highway flooding in cities such as Brownsville, Corpus Christi, Victoria, Houston ...
For Myrtle Beach, Denari said the city’s Public Works Department has roughly 9,500 drainage structures on a maintenance program, which equates to 185 miles of storm drains. Denari added that the ...
August 6, 2024 at 3:31 PM. As Tropical Storm Debby is expected to drop heavy rain across North Carolina in the coming days, the Triangle — with its rolling hills and valleys — faces flooding ...
Surface runoff (also known as overland flow or terrestrial runoff) is the unconfined flow of water over the ground surface, in contrast to channel runoff (or stream flow). It occurs when excess rainwater, stormwater, meltwater, or other sources, can no longer sufficiently rapidly infiltrate in the soil. This can occur when the soil is saturated ...