Explanation:

Largest of all the tanks built by Ahom Kings in Assam. It is considered as the largest men made pond in India. The water level of the tanks stays at 14 feet higher than ground level. The Tank Jayasagar was dug by Ahom king Rudrasingha (1696-1714) to commemorate his mother Sati Joymoti, wife of Gadapani, later King Gadadharsingha (1681-1695). The place was chosen, where Siulikpha convicted Joyamoti through his Chaodangs to extract information regarding her exiled husband Gadapani. This is the biggest man-made tank comprising an area of 318 acres including the four banks.