Nagarjunsagar-Srisailam Tiger Reserve (NSTR)

Aug. 3, 2023

The National Tiger Conservation Authority (NTCA) recently raised concern that cattle grazing in the forest and illegal fishing in the backwaters of Srisailam and Nagarjunasagar dams are posing a big threat to tigers in Nagarjunsagar-Srisailam Tiger Reserve (NSTR).

About Nagarjunsagar-Srisailam Tiger Reserve (NSTR):

  • Location: It is located in the Nallamala hill ranges(an offshoot of the Eastern Ghats) of Andhra Pradesh and spreads across the undivided districts of Guntur, Prakasam, and Kurnool.
  • It attained the status of a Tiger Reserve in 1983. 
  • This is the largest tiger reserve in the country, spreading over an area of 5937 Sq. Km.
  • It is named after two major dams in the area, Nagarjuna Sagar Dam and Srisailam Dam.
  • Two wildlife Sanctuaries, namely Rajiv Gandhi Wildlife Sanctuary and Gundla Brahmeswaram Wildlife Sanctuary (GBM), constitute the Tiger Reserve.
  • The river Krishna traverses through this Reserve for a linear distance of around 270 kilometres.
  • Topography: It consists of plateaus, ridges, gorges, and deep valleys.
  • Vegetation: Tropical dry deciduous forests with an undergrowth of bamboo and grass.
  • Flora: The habitat has several endemics like Andrographis nallamalayana, Eriolaena lushingtonii, Crotalaria madurensis Var, Dicliptera beddomei, and Premna hamiltonii.
  • Fauna:
    • Top faunal species include tigers, leopards, wolves, Wild dogs, and jackals.
    • The prey species are represented by Sambar, Chital, Chowsingha, Chinkara, Mouse Deer, Wild boar, and Porcupine.
    • The river Krishna has Muggers, otters, and Turtles.