It is popular in the peninsular plateau area where Andhra Pradesh (Including Telangana) and Tamil Nadu are the leading states. Andhra Pradesh is the largest state of tank irrigation which has about 29 per cent of tank irrigated area of India. About 16 per cent of the total irrigated area of the state is irrigated by tanks. The drainage areas of the Godavari and its tributaries have large number of tanks. Nellore and Warangal are the main districts of tank irrigation. Tamil Nadu has the second largest area which is over 23 per cent of tank irrigated area of India and about one-fifth of the total irrigated area of the state. Tanks comprise an important source of irrigation in the Karnataka Plateau, eastern Madhya Pradesh, eastern Maharashtra, interior Odisha and Kerala.