Assam flood: More than 3.1 lakh affected in 11 districts; several rivers flowing above danger marks. (IANS Photo)Guwahati, July 21 (IANS): Assam's flood situation remained grim on Tuesday with 11 districts reeling under inundation, affecting more than 3.1 lakh people, even as rescue teams intensified evacuation efforts in the worst-hit areas, according to an official flood report, officials said. The preliminary flood situation report issued today said 11 districts and 36 revenue circles have been affected by the deluge. State Disaster Response Force (SDRF) teams, equipped with 62 boats, have also been deployed across the affected districts to strengthen rescue operations. Meanwhile, the Central Water Commission reported that the Brahmaputra at Neamatighat and rivers Buridihing, Dikhou, Disang and Dhansiri were flowing above the danger level, indicating the possibility of further deterioration in the flood situation.