The inflow of water to Mahanadi reservoir from the upper catchment in Chhattisgarh has gradually and substantially reduced over the last 15 years, said RTI activist Hemanta Panda while quoting figures from information provided by the water resources department of Chhattisgarh government.
Quoting the report of gauge discharge site at Kashdhol entry point to Hirakud dam, Panda noted that between 2001 to 2005 the annual run up of water flow per year through the site on an average was 6160.8 million cubic meters with maximum 5033 cubic meter per second on average at peak period and lowest of 0.404 cu/meter /second during the off period that is average of 81.7 per cent and 0.02 per cent respectively of total capacity of water flow in Mahanadi.
Similarly the report of 2005-06 to 2010-11 reveals that only 70.7 per cent and 0.02 per cent on average water flow has been recorded, which has further come down to 69.85 per cent of average water flow in Mahanadi between 2010-11 to 2015-16 with minimum water flow at time noted as 0.03 per cent.The RTI activist said at present Chhattisgarh government is constructing six barrages over Mahanadi to provide water to industries which will further reduce the flow to Hirakud.
Another activist Ashis Khaitan said Chhattisgarh government is constructing seven barrages. He pointed out that Odisha government had tried to mislead the people by saying it was unaware of the projects, as letter correspondence between the two government&’s clearly indicate that Odisha was aware of at least some of the projects but had not raised any objection, he alleged.