|Central coordinates||73o 15.60' East 19o 31.30' North|
|IBA criteria||A1, A3|
|Altitude||70 - 300m|
|Year of IBA assessment||2004|
Site description Tansa Wildlife Sanctuary is located 90 km northeast of Mumbai, in the foothills of the Sahyadris (Western Ghats). It extends over Wada, Shahapur and Mokhada talukas of Thane district. It has two rivers, the Tansa and Vaitarna, and the Sanctuary gets its name from the former which divides the Sanctuary into two parts. The Sanctuary forms the catchment area of Tansa lake, along with the surrounding forests of Khardi, Vaitarna, Wada and Shahapur ranges. The reservoir on the River Tansa occupying an area of c. 20 sq. km is under the administration of Brihanmumbai Municipal Corporation (BMC). Tansa reservoir, along with Vaitarna and Bhatsa reservoirs, is the major sources of water to the megacities of Mumbai and Thane. Five revenue villages located geographically within the Sanctuary, donot form part of the Sanctuary. More than 100 villages are found in the periphery of the Sanctuary, many dependent on the Sanctuary for livelihood. Within Tansa Sanctuary, there is a fort at Mahuli, situated on a 762 m high hill top, indicating the area’s historical importance. The Sanctuary has Southern Tropical Moist Deciduous Forest, with a few patches of Evergreen forest. The dominant species are Teak Tectona grandis, Khair Acacia katechu, Kadam Mitragyna parvifolia, Adina cordifolia, Mahua Madhuca indica, and Red Silk Cotton Bombax ceiba.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|White-rumped Vulture Gyps bengalensis||-||2004||present [units unknown]||-||A1, A3||Critically Endangered|
|Indian Vulture Gyps indicus||-||2004||present [units unknown]||-||A1||Critically Endangered|
|Pallas's Fish-eagle Haliaeetus leucoryphus||-||2004||present [units unknown]||-||A1||Vulnerable|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Tansa||Sanctuary||30,481||is identical to site||30,481|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Land-use||Extent (% of site)|
|nature conservation and research||-|
|Notes: Nature Conservation|
|Notes: Catchment area of reservoirs|
Acknowledgements Key contributor: Sunil Laad.
Singh, D. F. and Pradhan, M. S. (1992) Vertebrate fauna of Tansa Wildlife Sanctuary, Maharashtra. Rec. Zool. Surv. India 91(3-4): 449-470.
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Recommended citation BirdLife International (2014) Important Bird Areas factsheet: Tansa Wildlife Sanctuary. Downloaded from http://www.birdlife.org on 14/03/2014
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