dam is located at the point where the Periyar flows through the gorge formed between two high and massive rocks known as 'Kuravan' and 'Kurathi'. Climate change Idukki has a large area of dense forest cover and shola forests. It is highly vulnerable to floods and drought and is considered a climate change hotspot in Kerala, along with the districts of Alappuzha, Palakkad, and Wayanad. Researchers attribute the increasing frequency in landslides in Idukki to climate change and deforestation. Changes in rainfall patterns caused by climate change, coupled with deforestation and large-scale construction projects, are among the contributing factors that led to the August 2020 landslide that killed 65 people, including plantation workers. Demographics According to the 2018 Statistics Report, Idukki district has a population of 1,093,156. The 2011 Census places it at 416th among the 640 districts of India. The district has a population density of . Its population growth rate over the decade 2001–2011 was −1.93% due to emigration and low fertility rates. Idukki has a sex ratio of 1,006 females for every 1,000 males, and a literacy rate of 92.2 percent. Scheduled Castes and Scheduled Tribes make up 13.12% and 5.03% of the population respectively. Malayalam and English are the two official administrative languages in the district. Around four-fifth of the people in Idukki district speak Malayalam as their mother tongue. The Taluks of Devikulam and Peerumedu have a considerable Tamil minority population, mostly made up of immigrant labourers in the tea gardens. However Malayalis are majority in both of these taluks as well. The aboriginal tribes in the district speak their own dialects such as Malavedan, Malaryan, Muthuvan, and Paliyan, which are closely related to the Malayalam languages. Religion According to the 2011 census, Hindus make up 48.86% (541,854) of the population, with Christians at 43.42% (Syro-Malabar, Jacobite, Pentecostal and Malankara Orthodox) (481,507) and Muslims at 7.41% (82,206). Technology Idukki district was the first in India to get connected to a super-fast broad band system as a part of the Digital India campaign. It was also the first to get BSNL 4G in whole country, taking the number of 4G operators in the district to four, including Vodafone Idea Ltd, Jio, and Bharti Airtel. Tourism Munnar Munnar was the summer resort of the British Government in the south. The town is situated at the convergence of three mountain streams, namely Muthirappuzha, Nallathanni, and Kundala. Munnar has