To the empty soil of excess water – good drainage allows water to pass through the soil, evenly promoting plant growth and bad drainage is where water stands in the soil, actually drowning roots.
A storm drain, storm sewer (United Kingdom, U.S. and Canada), highway drain, 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 streets, car parks, parking lots, footpaths, sidewalks, and roofs. Storm drains vary in design from small residential dry wells to large municipal systems.
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Drains receive water from street gutters on most motorways, freeways and other busy roads, as well as towns in areas with heavy rainfall that leads to flooding, and coastal towns with regular storms. Even rain gutters from houses and buildings can connect to the storm drain. Since many storm drainage systems are gravity sewers that drain untreated storm water into rivers or streams, any hazardous substances poured into the drains will contaminate the destination bodies of water.
Storm drains sometimes cannot manage the quantity of rain that falls in heavy rains or storms. Inundated drains can cause basement and street flooding. Many areas require detention tanks inside a property that temporarily hold runoff in heavy rains and restrict outlet flow to the public sewer. This reduces the risk of overwhelming the public sewer. Some storm drains mix stormwater (rainwater) with sewage, either intentionally in the case of combined sewers, or unintentionally.
English
Etymology
From drain + -age.
Pronunciation
- IPA(key): /ˈdɹeɪnəd͡ʒ/
Noun
drainage (countable and uncountable, plural drainages)
- A natural or artificial means for the removal of fluids from a given area by its draining away.
- A system of drains.
- A downward wind.
Derived terms
Translations
Anagrams
- areading, gardenia
French
Etymology
From English drainage. By surface analysis,
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