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Water is supplied from the Puttamgandi tank by gravity to the entire irrigated area of the project via balancing reservoir called Akkampalli reservoir with 1.5 tmcft storage capacity. [6] From Akkampalli reservoir, water is also pumped to the Hyderabad city for its water needs.
This is possible by constructing a balancing reservoir by separating some area of the NS reservoir with a new dam across the Bhimanapalli Vagu tributary at just upstream of the Puttamgandi PH approach channel. This new dam with FRL 590 feet (180 m) MSL, would not submerge any additional area other than the area already submerged by the NS ...
With an extensive rebuilding of the canal and several reservoirs, the project was completed in 2004, when the Poondi reservoir received Krishna water for the first time. [2] The supply of water to Chennai city in 2006 was 3.7 billion cubic feet (100 × 10 ^ 6 m 3 ). [ 3 ]
Dindi Reservoir is a medium water reservoir across Dindi tributary of River Krishna located near Dindi, Mahabubnagar town in Telangana. [4] [5] It is part of Srisailam Left Bank Canal. [6] This medium reservoir has 59 million cubic meters gross storage capacity. [7] It is close to Amrabad Tiger Reserve, around 95 kilometers from Hyderabad.
In terms of storage of water, it is the largest reservoir in India, with capacity of 12.22 billion cu m or 12.2 km 3, followed by Nagarjuna Sagar between Telangana and Andhra Pradesh. The dam was built as a joint venture between Madhya Pradesh irrigation and National Hydroelectric Power Corporation. It was commissioned in May 2005. [2]
Velugodu Reservoir is a balancing reservoir and located across the Galeru river, a tributary of Kundu River in Penner River basin, at Velugodu town in Nandyal district of Andhra Pradesh. [ 1 ] [ 2 ] [ 3 ] This reservoir is part of Telugu Ganga project and mainly fed by gravity canal from back waters of Srisailam Dam through Pothireddypadu head ...
In place of spillways that prevent over-topping of dams, Visvesvaraya employed 48 automatic gates that open and close at the rise and fall of water in the reservoir, in six sets, with eight in each. Each gate consists of a sill, lintel, and side grooves and plates; balance weight; float ; chains and pulleys; and inlet and outlet pipes.
The gross storage of the balancing reservoir is 4.23 tmcft. The water released from the upstream Ranjit Sagar Dam, after generating electricity through the 600 MW power house during peak hours, is stored in the balancing reservoir to supply water to the irrigation canals continuously without any overflow into the downstream river. [3]