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Location Poland, opolskie
Central coordinates 17o 15.00' East  50o 27.00' North
IBA criteria C3, C4, C6
Area 2,072 ha
Altitude 200 m
Year of IBA assessment 2010

Ogólnopolskie Towarzystwo Ochrony Ptaków

Site description A large storage reservoir on the Nysa K³odzka river, in a hilly agricultural landscape, near Otmuchów reservoir. At the western end there are artificial islands created as a result of gravel exploitation. Southern and western shores are partly overgrown with willow Salix scrub with sparse water-fringe vegetation. Two river mouths (the Widna and the Bia³a G³uchowska) are important for birds. Land-uses include gravel exploitation.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Bean Goose Anser fabalis passage  2004-2008  29,500 individuals  good  C3  Least Concern 
Mallard Anas platyrhynchos passage  1995-2003  23,000 individuals  C3  Least Concern 
Mediterranean Gull Larus melanocephalus breeding  2004-2009  3-9 breeding pairs  good  C6  Least Concern 
Common Tern Sterna hirundo breeding  2008  186 breeding pairs  good  C6  Least Concern 
A4iii Species group - waterbirds passage  2004-2008  30,000 individuals  good  C4   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Zbiornik Nyski - PLB160002 Birds Directive 2,128 protected area overlaps with site 1,814  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Standing freshwater; Water fringe vegetation  100%

Land use

Land-use Extent (% of site)
tourism/recreation 10%
water management 90%

Protection status National None International None

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Nysa reservoir. Downloaded from on 15/09/2014

To provide new information to update this factsheet or to correct any errors, please email BirdLife