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Location India, Haryana
Central coordinates 76o 59.00' East  28o 29.00' North
IBA criteria A1, A4i, A4iii
Area 100 ha
Altitude 216 - 219m
Year of IBA assessment 2004

Bombay Natural History Society

Site description Basai wetlands are located close to Delhi, about 2 km west of Gurgaon and 8 km east of Sultanpur National Park, in Haryana state. One of the outstanding features of the site is the relative tameness of the birds that utilize it. The main source of water is from a breached water channel bringing waste water and supposedly treated sewage from the Gurgaon Water and Sewage Works. This has created a permanent shallow wetland of about 250 acres comprising open water, Water Hyacinth and Typha reed beds. Rain water and the channeling of the water by farmers to irrigate their crops (particularly rice) regularly floods an area of up to 1 sq. km in the monsoon. Paspalum sp. grows extensively, and is cut for fodder by villagers. This provides an ideal grazing sward for a significant flock of wintering Bar-headed Geese Anser indicus. There are several bare, salt-laden fallow fields and some low thorn scrub. Along the railway line, borrow pits have formed small ponds and reed beds. Gurgaon Water and Sewage Works have recently constructed a deep-water reservoir close to the Ashram on the Sultanpur road, which now attracts diving duck, cormorants and grebes. The core area is predominantly covered with Water Hyacinth, large Typha reed beds and some fields of Paspalum grass. Adjoining it are areas of poor agricultural land, given over seasonally to rice, wheat and mustard. There is also infertile fallow land with Salicornia and Acacia scrub, particularly in the borrow pits. There are very few trees, but they include fruiting figs near the Temple and the Ashram. The members of the Delhi Bird Club regularly monitor the bird population of this IBA. Bird ringing camps, with the collaboration of BNHS, are organized twice a year.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Bar-headed Goose Anser indicus 2004  present  A4i  Least Concern 
Marbled Teal Marmaronetta angustirostris winter  2004  present  A1  Vulnerable 
Lesser Kestrel Falco naumanni passage  2004  present  A1  Least Concern 
White-rumped Vulture Gyps bengalensis non-breeding  2004  present  A1  Critically Endangered 
Greater Spotted Eagle Clanga clanga winter  2004  present  A1  Vulnerable 
Eastern Imperial Eagle Aquila heliaca winter  2004  present  A1  Vulnerable 
Sarus Crane Antigone antigone resident  2004  present  A1  Vulnerable 
A4iii Species group - waterbirds unknown  2004  20,000 individuals  unknown  A4iii   


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

Land use

Land-use Extent (% of site)
agriculture -
Notes: Agriculture
water management -
Notes: Water management

Acknowledgements Key contributors: Bill Harvey, Nikhil Devasar and members of the Delhibird Club.


Wetlands International (2002) Waterbird Population Estimates - Third Edition. Wetlands International Global Series No. 12. Wageningen, the Netherlands.

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Basai wetlands. Downloaded from on 20/10/2014

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