CBSE Class 9 Answered

Irrigation is important to ensure that crops get water at the right stages during growing.

The different kinds of irrigation systems adopted to supply water to agricultural lands are:

(i) Wells- There are two types of wells, dug wells and tube wells. In a dug well, water is collected from water bearing strata. Tube wells can tap water from the deeper strata.

(ii) Canals- This is an elaborate and extensive irrigation system. In this system, canals receive water from one or more reservoirs or from rivers.

(iii) River Lift system- In areas where canal flow is insufficient or irregular due to inadequate reservoir release, the lift system is more rational.

(iv) Tanks- These are small storage reservoirs, which intercept and store the run-off of smaller catchment areas.