Description of practice
Surface drains divert and remove excess water by means of improved natural channels or constructed drains, supplemented when necessary by shaping and grading the land surface to form such drains.
|Examples of how to use surface drains
(see Note below)
Bedded drainage system
The ground surface is shaped into parallel convex surfaces (humps) separated by hollows. The humps in such a bedded drainage system shed excess moisture relatively quickly while the hollows act as shallow surface drains.
Artificial drainage ditches are constructed to transport excess surface water or collect water from other types of drain.
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