The Asan Conservation Reserve is located at the confluence of Asan and Yamuna Rivers in Dehradun, Uttarakhand. Asan ConservationReserve is a home of many rare and endangered species and a significant wintering ground for migratory birds. The reserve spread over an area of 444.4 ha. It is the first Ramsar site inUttarakhand. It was declared a Conservation Reserve in 2005.