Dams
The Karamana river has two important dams on it. These are the Aruvikkara Dam, built in the 1930s and the Peppara Dam which lies further upstream and was built in 1983. The Aruvikkara Dam was completed with the aim of providing piped drinking water to the city. The Trivandrum Water Works, inaugurated by and named after Lord Willingdon in 1933, is in charge of receiving and distributing the Karamana's waters to the city even today. A JICA funded project is under way to augment the water distribution network in the city. The Peppara Dam regulates the flow of water into the Aruvikkara Dam by unifying all the upper tributaries of the Karamana river. The Peppara Dam has played a crucial role in eliminating the floods that once used to characterized the Karamana. There is also a 3 MW hydel power station at Peppara.
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