The Centre has launched the first ever across-the-river survey in the Ganga to determine the population of aquatic life, including that of the endangered Gangetic doplhin.
The survey will create a baseline scientific data for the government to take suitable measures to improve quality of the river water.
The first leg of the census was launched on March 1 from Narora in Uttar Pradesh to Bijnor (covering distance of nearly 165 km) to establish the number of the national aquatic animal.
Counting in the Allahabad to Varanasi stretch (close to 250 km in length) is expected to be launched soon.
A study to figure out fish species composition in the 2525-km-long river has been also been kick started from Harshil in Uttarakhand.
The authority is conducting the survey through Wildlife Institute of India (WII),, under the Namami Gange programme.
The study will, therefore, find out stretches where dolphin is habitating, what are the conditions there and the level of threat the long-snouted species is facing in a particular belt.
Apart from number of dolphins, number of ghariyals and turtles in the river will also be ascertained after summer sets in fully.