River

A river was a body of water. There were several rivers on Earth.

Extraterrestrial rivers
Gallifrey also had at least one river, (PROSE: Lungbarrow) as did the Gamma Forests. (TV: A Good Man Goes to War)

River Song's name originated from a literal translation of her original name, Melody Pond, into the language of the Gamma Forests. They translated "pond" as "river," since the only water in the forest was the river. (TV: The Doctor's Wife, A Good Man Goes to War)

Out of normal universe
On the E-space planet Alzarius, Alzarians used to settle near a river before their departure from the world. Riverfruits grew onshore. It was the origin habitat of the Marshmen. (TV: Full Circle)