The perennial canals can be built in the areas of

1. uneven terrain
2. low level relief with deep fertile soil
3. in the deltaic regions
4. in the mountainous relief

A tank can be constructed in the area of

1. undulating relief
2. underlying hard rocks
3. natural depressions
4. all the above

A tube well is a

1. borewell
2. pond
3. lake
4. surface well

The given type of modern irrigation is useful for arid region

1. bamboo irrigation
2. tube well irrigation
3. drip irrigation
4. sprinkler irrigation