Here is your short paragraph on Krishna basin!
Though the Krishna is the third largest river of India, yet it has poor water wealth because of low rainfall in the basin. Lying in the Deccan plateau, this basin covers large areas in the states of Maharashtra, Karnataka and Andhra Pradesh.
The river has two large tributaries—the Bhima and the Tungabhadra and four smaller tributaries—the Ghataprabha, the Malprabha, the Missi and the Muneru.
The entire basin has 41 water quality monitoring stations out of which 13 are on the main Krishna river. The urban areas of this basin generate about 1,404 million litres of wastewater (out of which only 204 Mid is treated) and 4488 tonnes of solid waste every day.
With an annual consumption of about 7941 tonnes of pesticides, agricultural runoff adds 120 mg/1 nitrogen, 26 mg/1 phosphorus and 31 mg/1 potassium to the river basin. The total domestic pollution load in the Krishna basin is 1,433,084 kg per day—50.6% rural and 49.4% urban.
Of the total BOD load generated, Andhra Pradesh accounts for 40.6%, Karnataka 32.7% and Maharashtra 26.7 per cent. Urban BOD load is 707.8 tonnes per day of which domestic are 77.6 per cent and industrial 22.4 per cent.
Several industrial units have come up along the river and the load of industrial waste is quite high in this river. The largest industrial pollution load in Maharashtra part of the basin comes from Pimpri Chinchwada New Corporation part of Pune urban agglomeration. In Karnataka, the Harihar Polyfibres Ltd. at Harihar in Dharwar district abstracts nearly 35,000 cum per day of water from the Tungabhadra and discharges about 33,000 cum per day of wastewater into the river. Bhadra river is badly polluted by Mysore Paper Mills and Visveswaraih Iron and Steel Limited.