Dear Student,
1.India's average annual rainfall is 110 cms. Geographic differences in the distribution of ranifall are mostly due to the country's disparity in relief. Rainfall is spread unevenly throughout the country
2.In the following regions, India is divided into
Heavy-rainfall zones:
These regions have more than 200 cm of rainfall each year. This include the western coast and western Ghats, the Sub-Himalayas and the north-eastern areas of India.
Areas with moderate rainfall
These areas receive 100 -200cms of annual rainfall. These include West Bengal, Orissa, Jharkhand, Bihar, Eastern U.P. The coastal plains of Tamil Nadu and Madhya Pradesh,
Scanty Rainfall Zones
Such regions receive fewer than 50 cm of annual rainfall. These include the deserts of Ladakh, South West Punjab, Southern Haryana, Western Rajasthan, Kutchh and Thar.
I hope the answer will serve your purpose.
Regards