Today, employees of the Ministry of Ecology of the Republic of Tatarstan and specialists of the Ministry of Civil Defense and Emergency Situations of the Republic of Tatarstan conducted an environmental campaign to restore the oxygen balance at Kharovoye Lake. Since the beginning of the year, more than 150 holes have been drilled to provide oxygen to the fish. It is also planned to hold a similar event on the Volga River in the area of Zaimishche village of Zelenodolskiy district and on the Komsomolskoye Lake in Derbyshki.