The situation in the flood affected state of Tamil Nadu has turned grim with heavy rainfall and water-logging, especially in the low lying areas. Tamil Nadu Chief Minister J Jayalalithaa will conduct an aerial survey of flood affected areas of Chennai, Kanchipuram and Tiruvallu today. Jayalalithaa had sought Rs. 2,000 crore for flood relief work. The Centre released a financial aid of Rs. 939.63 crore. An aerial survey by a drone showed water logging in many parts of Chennai due to the rains. Earlier, the Indian Air Force (IAF) lifted three NDRF teams from the Palam airport for flood-hit Tamil Nadu last evening with relief materials. Meanwhile, Rajya Sabha members offered to donate a part of their MPLADS fund for rehabilitation and rescue work. Prime Minister Narendra Modi himself took stock of the flood situation in Tamil Nadu and discussed it with his cabinet colleagues, including the Home and Finance Ministers. The Indian Air Force has already deployed two MI-17 choppers at Tambaram and two MI-17s are being moved from Tirupati to Chennai for relief and rescue operations. Five Chetak helicopters are also operating from Tambaram. In addition, four MI-17 - two each at Bangalore and Nagpur - are on standby. The National Disaster Management Authority will coordinate the relief activities on behalf of the Centre. The authority has a round-the-clock Toll Free helpline number 1078 for this purpose.