Rivers are definitely sacrally important—Tirthas particularly were rivers, then Kurukshetra, a huge tank, Mathura of course was right by the Yamuna, when it was wide enough. There are very few places in India such as Dwarka and Puri, Rameshwaram and Kanyakumari, where religious bathing takes place in the sea. The notion of tirtha is a river, a crossing place to the far shore, whatever you imagine it to be. Rivers are places where one does daily rituals, life-cycle rituals and where one goes for pilgrimage. In some sense they are temples—ever-flowing, rich with significance—such as the Kumbh. The holy place is where the rivers meet the ghats. That language of sacredness of the source or the sangam is the language of rivers. Hindus use rivers in ways that are ritually more intensive than any other culture I know.