The Indian Monsoon is affected by number of factors. On rof the fctors is ITCZ. The trough (Inter Tropical Convergence Zone) moves periodically to the north and south of its normal position. It affects the distribution of rainfall in India. When the trough move towards the north lying closer to the foothills of the Himalayas, the pattern of rainfall changes. The distribution of rainfall over the northern parts becomes scarce and the northeastern parts of the country lying closer to the foothills of the Himalayas receive abundant rainfall. The heavy rain fall associated with the region is also known as the breaks in the Monsoon rainfall.