CONSTRUCTION DETAILS OF NAGARJUN SAGAR

CONSTRUCTION DETAILS NAGARJUN SAGAR DAM:-

                                        Official name                      : Nagarjun sagar dam

                                       Location                                :  Nalgonda District

                                       Construction began         :    1956

                                     Opening Date                         : 1960

                                   Construction cost                    : 1300 cores

                DAM & SPILWAYS

                                           Height                           :      124 m (407 ft) from river level.

                                           Length                          :       1450 m (4575 ft)

                                           Impounds                    :        Krishna River

                                          Creates                         :        Nagarjun sagar reservoir

                                         Capacity                        :        11,560,000,000 m3   

                                        Catchment area            :         215000 km2 (83012 sq ml)

                                                        

                      Masonry dam

                                    Spillway of dam           :            471 m

                                    Non-over flow dam      :           979 m

                             Length of Masonry dam      :          1450 m

                                 Maximum height        :          125 m

             Earth Dam

Total Length of Earth dam           :            3414 m

Maximum height                      :            28 m

  

EFFECT OF THE PROJECT:-

                           The project benefited farmers in the districts of Guntur, Prakasam, Krishna, Nalgonda and Khammam. The right canal (a.k.a Jawaharlal canal) is 203 km long and irrigates 1.113 million acres (4,500 km²) of land. The left canal (a.k.a Lalbahadur Shastri canal) is 295 km long and irrigates 0.32 million acres (800 km²) of land in Nalgonda and Khammam districts of Telangana region. The project transformed the economy of above districts. 52 villages were submersed in water and 24000 people were affected. The relocation of the people was completed by 2007.

POWER GENERATION:-

                The hydroelectric plant has a power generation capacity of 815.6 MW with 8 units (1x110 MW+7x100.8 MW). First unit was commissioned on 7 March 1978 and 8th unit on 24 December 1985. The right canal plant has a power generation capacity of 90 MW with 3 units of 30 MW each. The left canal plant has a power generation capacity of 60 MW with 2 units of 30 MW each. The dam is constructed on the border of Guntur and Nalgonda districts. The dam also provides drinking water to the Nalagonda town.

Advantages:-

• Water resource management including irrigation
• water for human consumption
• flood control and others
• generate electricity
•  act to prevent water shed flooding
• provide irrigation
• navigation
• habitat improvement
• Improve fishery populations.

DISADVANTAGES:-

• If some natural problem (Flood, drought) comes they have to deal themselves.
•  Need to pay for resources which were earlier available in big state
•  Just like a small and new family it lacks experiences and need to take everything from start.