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Sedimentation Issues of Historical Cauvery Irrigation System in India

Author(s): P. K. Suresh; S. Sakthivel; R. Sundaravadivelu; R. Panneer Selvam; C. Podupanitilakam

Linked Author(s): R. Sundaravadivelu

Keywords: Basin; Regulator; Sedimentation

Abstract: The sacred Indian river Cauvery commences its journey in the hillocks of Karnataka state near Mysore and empties in Bay of Bengal adjacent to famous Tranquebar in Tamil Nadu flowing about765 km. . The river system is a source for agriculture, drinking water and hydro power. The irrigation is regulated in Tamilnadu state through five regulators out of which Grand anicut constructed in 2nd century is of historical importance. After Grand Anicut it divides into numerous branches forming vast network of irrigation channels. The mighty Cauvery river here is reduced to an insignificant channel and enters the Bay of Bengal. Cauvery flowing in Tamilnadu state is very wide resulting low flow velocity. This results in sediment accumulation and it was necessary to assess the quantity. The computations require hydraulic parameters. HECRAS software was adopted for assessing the hydraulic parameters. This paper presents the methodology adopted, and suggestions on sedimentation issues of the historical Cauvery irrigation system.


Year: 2016

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