With both Almatti and Tungabhadra reservoirs 90% full, the authorities will be forced to release water to the downstream reservoirs in Andhra Pradesh and Telangana.
If these two reservoirs continue to receive the same inflows in the next couple of days, the authorities will be forced to release 10 tmcft a day from Almatti and 5 tmcft from Tungabhadra.
Almatti, which is 88% full, recorded inflows of 1,25,467 cusecs on Wednesday and, therefore, 1,10,976 cusecs should be released downstream to the Narayanapur reservoir.
The Narayanapur reservoir, which is 87% full, recorded an inflow of 1,06,036 cusecs and released 47,519 cusecs downstream to the Jurala reservoir.
With a very limited flood cushion of just 5 tmcft, the Narayanapur reservoir authorities would be forced to release everything they receive in the coming few days. The position of Jurala reservoir, which has the capacity to hold just 9.7 tmcft, is similar. This reservoir, which is 48% full, has a flood cushion of just 4 tmcft.
With the flood cushion of the four upstream reservoirs highly reduced, the inflows will have to be released downstream, AP irrigation engineers have said.
One-lakh cusecs from the Krishna and 64,000 cusecs from Tungabhadra would work out to 15 tmcft a day, they say.
However, quite a lot of water is needed to fill Srisailam and Nagarjuna Sagar.
While 186.68 tmcft is needed to fill Srisailam, 178.68 tmcft is required to fill Nagarjuna Sagar.
Meanwhile, over 3.76 lakh cusecs is being discharged by the Godavari into the Bay of Bengal at the Dowleswaram barrage.
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