Floods caused by heavy rainfall in Sri Lanka have affected nearly a million people, including more than 127,000 displaced from their homes, the United Nations humanitarian office reported today, quoting figures provided by the Government.Torrential rainfall has lashed the island nation since 26 December, triggering floods and mudslides, mainly in the eastern and central parts of the country, with Batticaloa district in the east reported to have received the largest amount of precipitation in a century.The inclement weather conditions prevailing in the Eastern region today forced the Sri Lankan President Mahinda Rajapaksa to curtail his visit to the flood affected coastal city of Batticaloa and Ampara.According to Disaster Management Center, over 937,000 people have been affected by the recent torrential rain that affected the entire Eastern Province, North Central, Central and Northern Provinces. Around 48,000 displaced people have been moved to 453 centers set up in all affected districts.Sri Lanka’s health ministry has sent five medical teams to the eastern and Polonnaruwa areas ready to control possible outbreaks of diseases, and to set up mobile medical clinics to assist internally displaced persons. The UN World Health Organization (WHO) will bear the cost of the mobile clinics.The floods have destroyed acres of paddy fields . Officials in Ampara say the rainfall there since Saturday has been the highest ever recorded in such a short time.The Sri Lankan Army , Navy and the Air Force have been pressed into relief operation in the affected areas.