Bethuadahari is a town in the Nakashipara CD block in the Krishnanagar Sadar subdivision of the Nadia district of the state of West Bengal, India.

The sanctuary covers 67 hectares (170 acres), and was established in 1980 to preserve a portion of the central Gangetic alluvial zone.

Nadia district is mostly alluvial plains lying to the east of Hooghly River, locally known as Bhagirathi.

[1] The Krishnanagar Sadar subdivision, presented in the map alongside, has the Bhagirathi on the west, with Purba Bardhaman district lying across the river.

The area between the Bhagirathi and the Jalangi, which flows through the middle of the subdivision, is known as Kalantar, a low-lying tract of black clay soil.

The sanctuary covers 67 hectares (170 acres), and was established in 1980 to preserve a portion of the central Gangetic alluvial ecozone.