SIVASAGAR, Feb 6 ā Unabated erosion caused by the Dikhow, a tributary of the Brahmaputra, is posing a serious threat to the existence of Hanhsora Manipuri Gaon in Sivasagar district. The erosion during the rainy season has been continuing for the last 15 years. The situation is very critical and it is feared that the entire area, inhabited by Manipuri people who came during Ahom era with Queen Kuranga Nayani, wife of Swargadeo Rajeswar Singha, will be washed away by the Dikhow in the coming years if effective measures are not initiated early.