Illegal quarrying in the bed of Ghaggar river and sewage waste released from Panchkula, Zirakpur and adjoining villages have posed a threat to the flora and fauna near Chhatbir Zoo.

Besides quarrying, lack of water in the Ghaggar, too, has affected the visits of birds and animals.

A pipe discharges dirty water into the Ghaggar and people have been taking away soil from the river bed.