Subject to where you are from, different countries have different terms for "storm drain". abc

Subject to 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 the US, this is actually often called "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 popularly known as "stormwater drain".
And there 8 inch drain cover is, the next time you hear someone mentioning "storm drain", "storm sewer", "surface water drain","surface water sewer" and "stormwater drain", congratulations, you know they mean 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 protect yourself from flooding.
Although storm drains perform 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 might eventually end up with flooding.
To guarantee storm drains serve their purposes while minimizing the potential 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.
Over at Jonite, we specialize in steel reinforced drain covers (gratings) for your storm drains while preserving the aesthetic elements of the architecture around the drain covers.