The normal coverage is about 3.24 lakh acres for the delta. However, going by the average for the last five years, the figure comes to 4.57 lakh acres — a nearly 40% rise. Tamil Nadu The normal coverage is about 3.24 lakh acres for the delta. However, going by the average for the last five years, the figure comes to 4.57 lakh acres — a nearly 40% rise. Sci-Tech News | Latest Technological Developments | The Hindu