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 grate drains 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 the US, this is actually popularly known as "storm drain" or "storm sewer".
In the united kingdom, this is often called "surface water drain" or "surface water sewer".
In Australia and New Zealand, it is commonly known as "stormwater drain".
And there you have it, the next time you hear someone mentioning "storm drain", "storm sewer", "surface water drain","surface water sewer" and "stormwater drain", congratulations, you know they mention 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 prevent 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 trigger flooding.
To make sure storm drains serve their purposes while minimizing the risks posed to pedestrians and to prevent choking of the drains, drain covers (gratings) are widely-used to cover the inlets (openings) of the storm drains to achieve two purposes.
At Jonite, we concentrate on steel reinforced drain covers (gratings) for your storm drains while preserving the aesthetic areas of the architecture around the drain covers.