To the east of the border fence of Char-Mahishkunadi lies a narrow bypass channel of the Padma River in Bangladesh.

From Majdia, the Churni flows northwest to Shibnibas, then southeast, passing through Chandannagar, Benali, Hanskhali, Bapujinagar, Byaspur, Aranghata, Kailarayanpur, Ranaghat, and Masunda, before emptying into the Hooghly River at Shibpur.

[4] The sediment deposited at the confluence of the Churni and Hooghly rivers has created 'Mangaldwip' island, which now hosts an Eco-Tourism Park.

In various cultural narratives—including popular folklore, newspaper columns, local literature, and some research articles —the Churni River is consistently described as an artificially constructed canal.

[5] These accounts credit Maharaja Krishnachandra of Nadia with creating this waterway by diverting a segment of the Ichamati River's flow.

A thorough review of existing literatures Nadia Kahini, (Mallik, Kumudnath 1919) Kshitish Vansabali Charita, (Ray, Kartikeya Chandra 1876) and Sri Maharaj Krishnachandra Rayasya Charitang (Mukhopadhyay, Rajeev Lochan 1811) and an analysis of the current channel morphology of the river reveals that the myths and rumors about its origins—claiming it was artificially constructed by Maharaja Krishnachandra—are unsupported by evidence.

Urban wastewater discharge poses a significant pollution threat to the Churni River, particularly impacting fish habitats.

Agricultural activities in the river basin, marked by excessive use of fertilizers and pesticides, significantly contribute to nonpoint source pollution.

High ammonia levels lower fish disease resistance, causing gill damage and other health issues.