A waterfall is a geological formation created when a body of water, such as a stream or river, flows down a steep cliff.
Waterfalls also existed in the underground caverns on Ocampa, as well as in Dahkur Province on Bajor. (VOY: "Caretaker", DS9: "The Changing Face of Evil")
They often serve as popular tourist destinations for their natural beauty. Janaran Falls on Betazed was a waterfall that held notable sentimental value. (TNG: "Second Chances")
The gardens of the Bajoran monastery on Bajor featured small waterfalls. (DS9: "In the Hands of the Prophets")
One of Gideon Seyetik, terraforming genius of the 24th century, favorite marvels was Da Vinci Falls on Blue Horizon, a waterfall the size of Mount Everest. (DS9: "Second Sight")
Rhymus Major also has waterfalls. Natima Lang recalled the sound of them in a holosuite program she and Quark had used in 2370. (DS9: "Profit and Loss")
List of Waterfalls