Question

Distinguish between perennial and non perennial irrigation

Answer 1

Perennial rivers:

1. These are the rivers which show a continues stream of water during the year.

2. They are also called the permanent rivers.

3. Generally, these rivers are found in the areas where the rate of evaporation is much lower than the rainfall.

Non-perennial rivers:  

1. These are the rivers which do not show a flow of water even for a part of the year.

2. These are called the periodic rivers. the non-perennial rivers flow only during the rainy season.

3. These rivers are generally found in the areas with dry climates where the rates of evaporation are higher than the rainfall.