Nallambal LakeNallambal Lake is the only lake artificially made in Karaikal district, Puducherry in India.LocationThis lake was made in the village of Nallambal near Thirunallar town.DetailsThe lake was developed at a cost of about ₹4.98 crore. The government of Puducherry created this lake artificially to satisfy the irrigational needs of farmers. It also has plans to turn the lake into a tourist spot.