Country/territory: Iceland

IBA Criteria met: B1i, B2 (2000)
For more information about IBA criteria please click here

Area: 500 ha

Fuglavernd - BirdLife Iceland

Site description
A major freshwater river that drains Lake Thingvallavatn. Land-uses also include angling (salmon fishing), hydroelectric generation and holiday-homes. The area belongs to three communities: Grafningshreppur, ölfushreppur and Grímsneshreppur.

Key biodiversity
One of the few wintering sites for Bucephala islandica in Iceland away from Mývatn-Laxá (site 044). Also overwintering, in notable numbers, are Bucephala clangula (one of the few wintering sites in Iceland) and Mergus serrator.

Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Sog. Downloaded from on 04/12/2021.