|Most recent IBA monitoring assessment|
|Year of assessment||Threat score (pressure)||Condition score (state)||Action score (response)|
|2010||not assessed||very unfavourable||not assessed|
|For more information about IBA monitoring please click here|
A very shallow freshwater lake (the largest in Denmark) surrounded by reedbeds, marsh, cultivated areas and woodland.
Few data are available on bird populations.
BirdLife International (2019) Important Bird Areas factsheet: Arresø. Downloaded from http://www.birdlife.org on 12/12/2019.