Ramsar wetland sites in India Ramsar wetland site: A Ramsar site is a wetland site designated to be of international importance under the Ramsar Convention . The Convention on Wetlands , known as the Ramsar Convention , is an intergovernmental environmental treaty established in 1971 by UNESCO, which came into force in 1975. According to WWF-India , wetlands are one of the most threatened of all ecosystems in India. Loss of vegetation, salinization , excessive inundation , water pollution , invasive species , excessive development and road building , have all damaged the country's wetlands. As of December 2020 there are 42 recognized Ramsar sites in India. Sl. No. Name of Site State Location Date of Declaration Area ( in Sq. km. ) 1 Asan Conservation Reserve Uttarakhand 21.7.2020 4.444 2 Asthamudi Wetland Kerala 19.8.2002 614 3 Beas Cons...