Earlier most of the water of the Mathabhanga ran off to the east down the Kumara, Chitra, Coboduk (Bhairab), and Ichamati, but all these escape routes have been shut off, except a small amount for the Ichamati. The point to note is that while earlier the rivers in the region flowed in a south-easterly direction, but later some force pulled the Jalangi and the Mathabhanga in a south-westerly direction. The inference is that it occurred because of a local subsidence, which was active for some period prior to 1750 and which has since become inactive. While the bed of the Ichamati river is higher than that of the Mathabhanga, that of the Churni is lower than Mathabhanga by . During the lean period the level of water in the Mathabhanga is higher than that of the Padma. As a result, no water enters the Ichamati during the dry season. One of the causes of silting of the river was construction of guard wall for railway over bridge. The river beds in the area need to be excavated in order that there is flow of water during the lean season. Since this is required to be done both in India and Bangladesh, there is need for accord on this point. The matter has been discussed at the ministerial level, the area surveyed to have better idea of the problems of the people in the affected area, and decisive action is expected in the near future. The river zone also faces the problem of industrial pollution and forcible occupation of land by people. Arresting environmental hazards resulting from lack of sanitation facilities, encroachment, groundwater contamination like arsenic pollution, destruction of aquatic flora, fauna are some of the burning problem of the areas that needs to be tackled through participatory mechanism. Ichhamati river and its branches form a large oxbow lake complex near Bangaon in North 24-Paraganas district. Besides agricultural and anthropogenic stresses, weed infestation particularly with water hyacinth (Eichhornia crassipes) is a major concern because it is covering the surface of lake waters. At the end of Durga Puja the immersion ceremony in the Ichamati offers a unique spectacle along the India-Bangladesh river border. The Ichhamati river, which acts as a natural border between the two countries, becomes the scene of tremendous revelry on this day, when boats crammed with people from both countries converge here to immerse their respective idols.