In 2013 the 3.086 ha wetland area Andakill, nature reserve and habitat protected area around the AUI campus was designated as a Ramsar Site. Andakill is a complex wetland located at the estuary of the fjord Borgarfjörður, with two rivers, Hvítá and Andakilsá, and the lake Vatnshamravatn, as well as alluvial floodplains, marshes, and managed hayfields. The area hosts numerous species of waterbirds, among them shelducks Tadorna tadorna and the White-Tailed Sea Eagle Haliaeetus albicilla.
Andakill wetland is an important resting, feeding and breeding area for such wetland birds as the Greenland White-fronted goose Anser albifrons flavirostris. The floodplains of river Andakilsá include extensive wetlands and marshes primarily used for livestock grazing. The main hydrological value of the wetland is flood control, sediments and nutrients retention, carbon storage, and shoreline stabilization.