Introduction
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Periyar Tiger Reserve (PTR) has a total extent of 925 km2. The ‘Periyar Wildlife Sanctuary Proper, with an extent of 777 km2,was constituted in 1950 as per notification number F1.2854/49/DD dated 11 August 1950. The Sanctuary was brought under Project Tiger in 1978 as the 10th tiger reserve in the country and named Periyar Tiger Reserve. In 1982, an area of 350 km2 within the Sanctuary was notified as Periyar National Park (vide S. R. O. No. 1407/82 (G.O (P) 310/82/AD dated 27 October 1982). An extent of 881 km2 was notified (vide S.R.O. No. 1089/2007 (G.O. (P) No.75/07/F&WLD dated 31 December 2007)) as the core or Critical Tiger Habitat of PTR, which includes 733 km2 of Periyar Wildlife Sanctuary Proper and 148 km2 of reserved forests of the adjoining Goodrical Range of Ranni Division. An extent of 44 km2 was notified as a buffer to PTR (vide G.O (P) No.18/2011/F&WLD dated 22 March 2011). The areas are drained by two major river systems, namely the Periyar and Pampa. Three major reservoirs, viz., Periyar Lake, Pampa and Kakki, exist within this area. The area has a high drainage density in most places. In addition to the natural water sources in the reserve, artificial waterholes are created to ensure water availability to animals during peak summer. 288 water holes have been created and maintained in the tiger reserve.
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