This document discusses different types of storm drains from various locations around the world. It describes an ancient Roman gully, a 114-inch aluminized pipe drain in Guasave, Mexico that flows at 25 cubic meters per second, and an American-style curbside drain. It also mentions the lack of storm drainage in an urban slum in Bangladesh, which is a common issue in developing countries.

9. Ancient Roman gully

10. Old storm drain
in Kutná Hora,
the Czech
Republic

11. 114" pipe installation; Pipe: 114" aluminized
type 2; Flow: 25 cubic meters/second; This is a
storm drain in Guasave, Mexico.

12. American-style curbside storm drain
receiving urban runoff

13. Lack of proper storm drains and sewer systems in Kalibari
community in Mymensingh, Bangladesh - a common situation in
urban slums in developing countries

15. Fernando Cejas Rayos Jr.
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