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Location Norway, Akershus
Central coordinates 11o 14.00' East  60o 21.00' North
IBA criteria B1i, B3
Area 840 ha
Altitude 122 - 175m
Year of IBA assessment 2014

Norsk Ornitologisk Forening

Site description Vorma is the initial stretch of the largest river in Norway, the Glomma, flowing out of Mjøsa, the largest lake in Norway. The most important places for birds at this site are found between the outlet from Mjøsa and Eidsvoll, and along the Andelva river which flows from Lake Aurdal into the Vorma river. The area around the rivers is mostly cultivated. Water is used for electricity generation.

Key Biodiversity The best area for Cygnus cygnus is up the Vorma river from Eidsvoll Station to Minnesund at the outlet of Lake Mjøsa, an area that does not freeze in winter.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Whooper Swan Cygnus cygnus winter  2004-2014  200-700 individuals  good  B1i, B3  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Vorma Zoological Protection of Species 733 protected area contained by site 0  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Rivers and streams  100%

Land use

Land-use Extent (% of site)
urban/industrial/transport 50%
water management 100%

Protection status National None International None

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Vorma. Downloaded from on 22/10/2016

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