Economy Kerala floods: The controversial dam under the spotlight Updated : August 17, 2018 04:49 PM IST The Mullaperiyar dam has also been the centre of controversy for more than four decades due to its peculiarity of its origins. The dam, which was constructed between 1887 and 1895, is located in Kerala on the Periyar river, but is maintained and operated by Tamil Nadu. The shutters of the dam have been raised in intervals — this is true of all the dams in Kerala — increasing the flow and intensity of the water to adjoining areas and farther. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.