What is the largest lake in the World?

Although I have seen several conflicting references, it appears that The Caspian Sea is the largest lake in both volume and area


http://www.worldlakes.org/lakeprofiles.asp?anchor=area

http://www.worldlakes.org/lakeprofiles.asp?anchor=volume

Thanks for including that it is the largest in both area and volume. Too many assume that area is the only way to measure a lake's size.