Climate of Bihar in the south China sea. The maximum frequency of the tropical cyclones in Bihar is during September–November especially during the asterism called hathiya. These cyclones are essential for the maturing of paddy, and are required for the moistening of the soil for the cultivation of rabi crops. Bihar is India's most flood-prone State, with 76% of the population in the north Bihar living under the recurring threat of flood devastation. According to some historical data, 16.5% of the total flood affected area in India is located in Bihar while 22.1% of the flood affected population in India lives in Bihar.
2007 Bihar flood 2007 Bihar flood The 2007 Bihar flood, which started in August 2007, was described by the United Nations as the worst flood in the "living memory" of Bihar. It is believed to be the worst flood in Bihar in the last 30 years. By 3 August, the estimated death toll was 41 people, and 48 schoolgirls were marooned in a school in the Darbhanga district. By 8 August, the flooding had affected an estimated 10 million people in Bihar. Army helicopters delivered food packets to Bihar residents and 180 relief camps were established. By 10 August, aid workers in Bihar