The Periyar (Malayalam: [peɾijaːr], meaning: big river) is the longest river and has the largest discharge potential in the Indian state of Kerala. It is one of the few perennial rivers in the region and provides drinking water for several major towns. The Periyar is vital to the economy of Kerala because it generates a significant proportion of Kerala's electrical power via the Idukki Dam and it flows along a region of industrial and commercial activity. The river also provides water for irrigation, domestic water use, and supports a rich fishery. Due to these reasons, the river has been named the "Lifeline of Kerala". Kochi city, in the vicinity of the river mouth, draws its water supply from Aluva, an upstream site sufficiently free of seawater intrusion. Twenty five percent of Kerala's industries are along the banks of the Periyar. These are mostly crowded within a stretch of 5 kilometres (3 mi) in the Eloor-Edayar region (Udhyogamandal), about 10 kilometres (6 mi) north of Kochi harbor.
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Periyar River in the context of Purananuru
The Purananuru (Tamil: புறநானூறு, Puṟanāṉūṟu, literally "four hundred [poems] in the genre puram"), sometimes called Puram or Purappattu, is a classical Tamil poetic work and traditionally the last of the Eight Anthologies (Ettuthokai) in the Sangam literature. It is a collection of 400 heroic poems about kings, wars and public life, of which two are lost and a few have survived into the modern age in fragments. The collected poems were composed by 157 poets, of which 14 were anonymous and at least 10 were women. This anthology has been variously dated between 1st century BCE and 5th century CE, with Kamil Zvelebil, a Tamil literature scholar, dating predominantly all of the poems of Purananuru sometime between 2nd and 5th century CE. Nevertheless, few poems are dated to the period of 1st century BCE.
The Purananuru anthology is diverse. Of its 400 poems, 138 praise 43 kings – 18 from the Chera dynasty, 13 Chola dynasty kings, and 12 Early Pandya dynasty kings. Another 141 poems praise 48 chieftains. These panegyric poems recite their heroic deeds, as well as another 109 poems that recount deeds of anonymous heroes, likely of older Tamil oral tradition. Some of the poems are gnomic in nature, which have attracted unrealistic attempts to read an ethical message, states Zvelebil. The poetry largely focuses on war, means of war such as horses, heroic deeds, widowhood, hardships, impermanence, and other effects of wars between kingdoms based along the rivers Kaveri, Periyar and Vaigai.