'In India most of rainfall is relief rainfall'. Describe.

Relief rainfall:
(i)Orographic features play an important role in the distribution of rainfall in India. The amount of rainfall in an area is determined by the location of the mountains. 
(ii)In mountainous areas of Khasi Jaintia hills annual rainfallexceeds 1000 cms. In Ganges valley, the amount of rainfall goes on decreasing up the Ganges Valley.
(iii)The on-shore winds give heavy rainfall on windward slopes ; but rain shadow areas remain dry. Garo Khasi hills get more than 1000 cms of annual rainfall, but the amount drops to 200 cms over Shillong plateau and Brahmaputra Valley lying in the rain shadow.
(iv)Malabar Coast and Western Ghats get more than 300 cms of rainfall, but Deccan plateau lies in the rain shadow of Western Ghats and remains dry (60 cms rainfall).
(v)In Rajasthan, the Aravalli system lies parallel to the direction of the S.W. monsoons and is unable to force these winds to rise. So Rajasthan remains practically dry.