Porvoonjoki Delta

Country/territory: Finland

IBA Criteria met: A4i, B1i, B3, C2, C3 (2000)
For more information about IBA criteria please click here

Area: 899 ha

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2010 high very unfavourable medium
For more information about IBA monitoring please click here

Site description
A large, richly vegetated delta of the Porvoo river, with few small meadows along the shores. At the heart of the site is a largish, shallow area of open water (Stenbölefjärden) bordered by belts of Phragmites.

Key biodiversity
One of the most important breeding and staging areas for waterbirds in the country. Probably the best single congregatory area in spring in Finland for Mergus merganser and M. albellus. Species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (max. 2 individuals, passage), Crex crex (max. 3 pairs, breeding).

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Porvoonjoki Delta. Downloaded from on 08/02/2023.