Studies on Environmental Status of Bagali Tank Near Harpanahalli, Bellary District, Karnataka (India)

Bagali tank is a perennial artificial water body situated 10 kms away from Harapanahalli to north-eastern region. The area of the tank is 146.2 hectares and depth is about 30 feet. The water body is irregular in shape. It is located at 14.842°N latitude and 75.989°E longitude. Rainwater, sewage and seepage from hilly regions is the main source of water to this tank. The water is used for agricultural practices and domestic activities. Due to anthropogenic activities, rapid industrial growth, domestic and agricultural activities of the region, the tank water is being polluted, which is the case with almost all major tanks of the region and also in India. A yearlong study was conducted to measure various physico-chemical and bacteriological parameters including levels of phytoplankton in the tank. The study revealed that there is indication of pollution in the Bagali Tank and hence preventive measures are required to avoid further deterioration of the tank water quality.