Depending on where you are from, different countries have different terms for "storm drain". abc

Based on where you are from, different countries have different terms for "storm drain".
Accordingly to Wikipedia, a storm drain is actually a tunnel that carry runoffs (rain) from urban areas. For a layman, it helps to think along the line of sewage system which works beneath our cities.
In the US, this is actually typically referred to as "storm drain" or "storm sewer".
In great britan, this is actually best known "surface water drain" or "surface water sewer".
In Australia and New Zealand, it is commonly known as "stormwater drain".
And there it is, the very next time you hear someone mentioning "storm drain", "storm sewer", "surface water drain","surface water sewer" and "stormwater drain", you now know they refer to exactly the same thing.
Functions of storm drain include draining excess water (rain or storm water) and ground water from pavement, streets and carparks into rivers and streams to counteract flooding.
Although storm drains do a amazing job of draining excess water from the urban areas, the inlets are essentially openings where left uncovered could be a danger to pedestrians. Left uncovered, rubbish will enter the storm drains and cause choking which can eventually lead to flooding.
In 4 inch drain cover to ensure storm drains serve their purposes while minimizing the risks posed to pedestrians and to prevent choking of the drains, drain covers (gratings) are employed to cover the inlets (openings) of the storm drains to achieve two purposes.
At Jonite, we specialize in steel reinforced drain covers (gratings) that cover your storm drains while preserving the aesthetic components of the architecture around the drain covers.