Alceste
Vagabond
I edited it before you posted that to reflect that the river itself is a component of the goddess but not the goddess itself.
Perhaps I should post in the Hinduism DIR and I'll link here with the results.
And for one who thinks Hindus don't believe their deities are literally true, you should reconsider which one of us understands Hinduism less. The Ganesha believers alone will tell you otherwise.
Literally exist, as unique, discrete entities, not literally "true". True is a different kettle of fish. But I think you'll find that all the deities and the natural places they inhabit are a little more complicated than you're imagining. Not only is Ganga literally a river and also a goddess personifying a river, she is also one of the many faces of Brahman, as is Ganesha.