Which one of the following is an artificial lake? 

Kodaikanal Lake is a manmade lake located in the Kodaikanal city in Dindigul district in Tamil Nadu, India. Sir Vere Henry Levinge, the then Collector of Madurai, was instrumental in creating the lake in 1863, amidst the Kodaikanal town which was developed by the British and early missionaries from USA. Option b is incorrect. Kolleru Lake located in Andhra Pradeshis a Ramsar site. It is located between Krishna and Godavari river systems. Option c is incorrect. Nainital lake is a natural fresh water lake which is tectonic in origin. Option d is incorrect. Renuka Lake is a designated Ramsar site. It is the largest fresh water lake of Himachal Pradesh.