In 2007, Haryana Irrigation Department spent INR435.26 crore (INR4.3 billion or US$7 million) to renovate and restore water bodies in the state for the conservation of water, recharging of ground water, preservation of environment and enhancement of tourism. A study by the Panjab University found 60 fish species of 19 families, 11 commercial and 6 exotic species, in the water bodies of Haryana. Water bodies remain under risk from encroachment, shrinking of catchment area and pollution. In 2010, India's first ever diatom data basing was done in ten different water bodies at ten different stations in Haryana. A 2015 study of 24 water bodies of Haryana, found 39 morphologically different types of diatoms.