The Piyali leaves the Bidyadhari River 14 kilometres (9 mi) below Bamanghata (Tiljala) and flows south and south-west till it joins the Matla River about 32 kilometres (20 mi) below Canning. The Piyali links to the Matla through the Kultala gang which also links to the Thakuran.
Piyali River is a tidal estuarine river in and around the Sundarbans in South 24 Parganas district in the Indian state of West Bengal.
More Info.: http://kolkatatours.in/sundarban.php?target=Reserve-Forest-of-Sundarban&place=Piyali%20Island#Piyali%20Island