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Location India, Jharkhand
Central coordinates 87o 49.35' East  25o 0.00' North
IBA criteria A1
Area 565 ha
Year of IBA assessment 2004

Bombay Natural History Society

Site description Udhuwa or Udhwa Lake is situated 11 kms southeast of Rajmahal in the Sahebganj district of Jharkhand state. This Bird Sanctuary is constituted by two waterbodies, namely Pataura (155 ha) and Berhale (410 ha). Pataura is a comparatively clean waterbody and the average depth is about 2 m whereas Berhale is a shallow one having average depth of about 70 cm. Berhale is largely choked with aquatic vegetation, with small pockets of clear water. Both these waterbodies are inter-connected by a water channel and the whole bird Sanctuary is connected with River Ganga at Farraka by Udhuwa Nala which is a 25 km stretch. Pataura is surrounded by hillocks on one side, and on the other side, the Forest Department has done some plantations (on the hillocks).

Key Biodiversity 

AVIFAUNA: Not much work has been done on this Sanctuary, but Choudhary et al. (1992) have identified 83 species of birds, including many forest species. The list includes such rarities as Nordmann’s Greenshank or Spotted Greenshank Tringa guttifer but this needs confirmation. A. Mishra (pers. comm. 2001) has sighted the Near Threatened Black-necked Stork Ephippiorhynchus asiaticus. At present, it does not qualify in A4iii criteria but once it is properly protected, Udhuwa has great potential to become an important waterfowl refuge (A. Mishra pers. comm. 2001).

OTHER KEY FAUNA: There are not many large mammals of conservation concern. The lake has about 22 fish species, most of them of commercial value (Choudhary et al. 1992).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Lesser Adjutant Leptoptilos javanicus resident  2004  present  A1  Vulnerable 
Pallas's Fish-eagle Haliaeetus leucoryphus resident  2004  present  A1  Vulnerable 
White-rumped Vulture Gyps bengalensis non-breeding  2004  present  A1  Critically Endangered 

IBA Monitoring

2014 very high near favourable medium
Good - based on reliable and complete / representative data

Agriculture and aquaculture annual & perennial non-timber crops - small-holder farming happening now some of area/population (10-49%) moderate to rapid deterioration high
Biological resource use fishing & harvesting aquatic resources - unintentional effects: subsistence/small scale happening now whole area/population (>90%) moderate to rapid deterioration very high
Biological resource use hunting & collecting terrestrial animals - unintentional effects (species is not the target) happening now whole area/population (>90%) moderate to rapid deterioration very high
Human intrusions and disturbance work and other activities happening now whole area/population (>90%) moderate to rapid deterioration very high
Invasive & other problematic species, genes & diseases invasive non-native/alien species/diseases - unspecified species happening now whole area/population (>90%) moderate to rapid deterioration very high
Pollution agricultural & forestry effluents - type unknown/unrecorded happening now some of area/population (10-49%) slow but significant deterioration medium

Artificial - aquatic   0 0 good (> 90%) moderate (70-90%) near favourable

Whole area of site (>90%) covered by appropriate conservation designation  A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species  Some limited conservation initiatives are in place  medium 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Udhwa Lake Sanctuary 6 is identical to site 565  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland)   -
Artificial - terrestrial   -
Artificial - aquatic   -

Land use

Land-use Extent (% of site)
agriculture -
Notes: Agriculture
fisheries/aquaculture -
Notes: Fishing

Acknowledgements Key contributor: Arvind Mishra.


Choudhary, S. K., Mishra, A., Ghosh, T. K. and Jha, A. (1992) Udhuwa Lake Bird Sanctuary: Status Report I. Mandar Nature Club, Bhagalpur. Pp. 26.

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Udhuwa Lake Bird Sanctuary. Downloaded from on 28/10/2016

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