I guess the annual release of 192 TMC by KA was arrived at right calculations and not any political lobbying. But is this release on all years? (I mean drought years too?) Being the home of Mathematical geniuses (India), 192 TMC per year may have been arrived correctly. Also due to political/skewed up Indian mind, it may be incorrect too. But, from my limited knowledge of numbers, it comes out that KA should release135 TMC per yr.
My calculations: For the sake of simplicity, removed Kerala and Pondicherry.
Assuming, basin area in TN is 43 SqKm (57%) and KA is 33 SqKm (43%) and water collected by TN is 250 TMC and KA is 425 TMC. (Total of 675). TN should get 385 TMC (57% of 675) and KA should get 290 TMC (43% of 675). Since TN is collecting only 250 (because of the upper dams- kabini, KRS, etc.), it should get (385-250) which is 135 TMC. And KA is collecting more 425 (instead of 290), it should release 425-290=135 TMC. This, only if 675 TMC is collected in a given year. If it is less or more then 675 TMC, it should be proportionate. Both regions should be proportionately drought or flooded. Ofcourse, both parties may argue on these numbers. But is it rocket science to get the actual numbers from the area? We know where the river flows and just get the catchments area around the river? Ofcourse, there may be other subtleties to these calculations. I am open to change these numbers.
