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Location Hungary, Komárom-Esztergom
Central coordinates 18o 18.00' East  47o 39.00' North
IBA criteria C3
Area 3,987 ha
Altitude 124 - 187m
Year of IBA assessment 2002

Hungarian Ornithological and Nature Conservation Society

Site description The lake is situated along the által stream, and is bordered by the town of Tata. It is the largest area of standing water in the district, and has an average depth of 2.3 m when full. Following temporary drainage for fish-farming, shallow water pools and inlets cover large areas. Human activities include boating and angling.

Key Biodiversity An important roosting site for wintering wildfowl, especially for Anser fabalis. A total of 220 bird species have been recorded at the site.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Bean Goose Anser fabalis winter  1997-2000  24,000 individuals  C3  Least Concern 
Greater White-fronted Goose Anser albifrons winter  1997-2000  2,800 individuals  C3  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Tata, Öreg-tó (Old Lake) Wetlands of International Importance (Ramsar) 269 protected area contains site 259  


IUCN habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest; Broadleaved deciduous woodland; Mixed woodland  11%
Wetlands (inland) Rivers and streams; Standing freshwater; Water fringe vegetation  88%

Land use

Land-use Extent (% of site)
fisheries/aquaculture 85%
forestry 11%
tourism/recreation 4%
water management 86%

Protection status National None International High259 ha of IBA covered by Ramsar Site (Tata, Old Lake, 269 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Öreg Lake of Tata. Downloaded from on 27/10/2016

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