7 states saw drop in rainfall in last 30 years

Seven states — Uttar Pradesh, Bihar, West Bengal, Himachal Pradesh, Arunachal Pradesh, Meghalaya and Nagaland — have shown “significant decreasing trends” in annual rainfall in the last 30 years and many parts of the country witnessed increase in number of “dry days” during the monsoon season which adversely affected groundwater recharges in these regions.