The site is a former marine inlet now separated from the sea by a narrow sand-spit. The lake is predominantly freshwater with a maximum depth of 18 m. The western shore is formed by a steep limestone promontory, and narrow reedbeds (Phragmites) occur. In winter up to 90% of the lake area may freeze.
This is an important site for passage waterbirds, particularly Anatidae and Laridae; the surrounds are a stop-over site for migrating passerines. Species of global conservation concern that do not meet IBA criteria: Aythya nyroca (2-40 passage birds).
Pressure/threats to key biodiversity
The tourist towns of Constanþa, Mamaia and Ovidiu surround the lake. Disturbance of birds during the summer is high.
National None International None
BirdLife International (2022) Important Bird Areas factsheet: Lake Siutghiol. Downloaded from
http://www.birdlife.org on 17/08/2022.