Koskeljärvi, Vaaljärvi and Pitkäjärvi lakes

Country/territory: Finland

IBA Criteria met: B1i, B3, C3, C6 (2000)
For more information about IBA criteria please click here

Area: 2,090 ha

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

Site description
Three adjacent, shallow and nutrient-rich lakes with lush vegetation on the upper course of the Lapijoki river. Some parts of the shoreline are bordered by wide marshes. The water-levels of Koskeljärvi and Pitkäjärvi lakes are regulated, which has increased the lake's value for birds on the former, but on the latter has caused over-eutrophication. Koskeljärvi, the most important ornithologically, is the largest lake in south-western Finland without any settlements on its shores.

Key biodiversity
An important breeding area for wetland birds, including nationally important numbers of Circus aeruginosus (6 pairs). Species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (max. 6 individuals, passage).

Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Koskeljärvi, Vaaljärvi and Pitkäjärvi lakes. Downloaded from on 01/12/2021.