Question

What do you mean by catchment area of a river, river basin, drainage basin and watershed? What is difference between catchment area and watershed? What is the difference between watershed and water divide?

Answer 1

Catchment area, drainage basin and watershed refers to the entire area from where tributaries are draining the water into the main river, all three means the same. But watershed also means water divide. Command area is that area up to where the water of any canal provides irrigation.