Compare the above system with the probable systems in hilly/mountainous areas or plains or plateau regions

Explanation

In plains , the water harvesting structures are crescent - shaped earthen embankments These are low strainght, and concrete.
in hilly regions , the system of cancal irrigation called Kulhsis used for Water harvesting this involes a collection of rain water in a steam , which is then diverted into man - made channels down the hill sides.