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Location Spain, Extremadura
Central coordinates 6o 35.00' West  40o 10.00' North
IBA criteria A1, A4i, B1i, C1, C2, C3
Area 48,400 ha
Altitude 300 - 510m
Year of IBA assessment 2000


Site description This site comprises a reservoir surrounded by dehesa, non-irrigated arable land and grassland. There is a wooded island in the reservoir. The main human activities are livestock-grazing and hunting.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Black Stork Ciconia nigra passage  1992  40-50 individuals  medium  B1i, C2  Least Concern 
Cattle Egret Bubulcus ibis breeding  1994  750 breeding pairs  good  A4i, B1i, C3  Least Concern 
Great Bustard Otis tarda winter  1995  40-50 individuals  good  A1, C1  Vulnerable 
Common Crane Grus grus winter  1995  853-1,620 individuals  medium  B1i, C2  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
ARROYOS PATANA Y REGUEROS - ES4320061 Habitats Directive 951 protected area overlaps with site 692  
EMBALSE DE BORBOLLÓN - ES0000326 Birds Directive 946 protected area contained by site 946  
LAGUNA TEMPORAL DE VALDEHORNOS - ES4320067 Habitats Directive 13 protected area contained by site 13  
MINA DE LA AURORA - ES4320051 Habitats Directive 5 protected area contained by site 5  
MINA DE LA RIVERA DE ACEBO - ES4320052 Habitats Directive 5 protected area contained by site 5  
RIOS ARRAGO Y TRALGAS - ES4320072 Habitats Directive 761 protected area overlaps with site 407  
RIVERAS DE GATA Y ACEBO - ES4320076 Habitats Directive 1,089 protected area overlaps with site 419  
SIERRAS DE RISCO VIEJO - ES4320047 Habitats Directive 13,830 protected area is adjacent to site 0  


IUCN habitat Habitat detail Extent (% of site)
Forest Broadleaved evergreen woodland  26%
Shrubland Scrub  -
Grassland   26%
Wetlands (inland) Standing freshwater  -
Artificial - terrestrial Arable land; Highly improved re-seeded landscapes  -

Land use

Land-use Extent (% of site)
agriculture 26%
hunting 26%

Protection status National None International None

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Borbollón reservoir. Downloaded from on 21/10/2014

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