stormwater, noun
Used attributively in Special Combinations
1965 A. Fugard Notebks (1983) 123She would never have reached her destination on foot that day...She said she knew it and would have slept in one of the stormwater drains.
1986 Sowetan 24 Sept. 7He said the council will also embark on the following projects: Improve the water pressure and distribution of water in the township; Upgrade roads; Improve stormwater drainage [etc.].

Chrome
Firefox
Internet Explorer
Safari