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

Depending on where you are from, different countries have different terms for "storm drain".
Accordingly to Wikipedia, a storm drain is essentially a tunnel that carry runoffs (rain) from urban areas. For a layman, it helps to think along the line of sewage system functions beneath our cities.
In america, this is actually commonly known as "storm drain" or "storm sewer".
In the united kingdom, this is actually popularly known as "surface water drain" or "surface water sewer".
In Australia and New Zealand, it is often called "stormwater drain".
And there it is, next time you hear someone mentioning "storm drain", "storm sewer", "surface water drain","surface water sewer" and "stormwater drain", grate , you know they mean the exact 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 prevent flooding.
Although storm drains accomplish a amazing job of draining excess water from the urban areas, the inlets are essentially openings where left uncovered can pose a hazard to pedestrians. Left uncovered, rubbish will get into the storm drains and cause choking which may eventually lead to flooding.
To ensure storm drains serve their purposes while minimizing the potential 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 the two purposes.
At Jonite, we specialise in steel reinforced drain covers (gratings) that cover your storm drains while preserving the aesthetic aspects of the architecture around the drain covers.