Which one of the following is not true about Thanneermukkom Bund?

Thanneermukkom Bund is a saltwater barrier constructed under the Kuttanad Development Scheme that also acts as a bridge connecting the Kottayam and Alappuzha districts of Kerala. It divides the Vembanad lake into two parts - one with saline water from the sea, and the other with fresh water fed by the rivers.

Vembanad lake, the largest lake in Kerala and the longest lake in India, is surrounded by paddy fields in a region known as Kuttanad. The barrier helps the rice farmers of Kuttanad since now they are able to grow one extra rice crop every year. However, the Bund has also caused ecological problems like the rampant growth of Water Hyacinth, and decreasing fish population in the region.