What do we call a long, deep valley that has been carved by running water?

The term for a long, deep valley that has been carved by running water is widely recognized as a ravine. Ravines are characterized by their steep sides and narrow openings at the top, formed over time as streams or rivers erode the land, creating significant depth and a distinct channel often associated with the flowing water.

While a gorge is similar and also describes a deep valley, the specific characteristics of a ravine, such as its typically smaller scale compared to gorges and canyons, set it apart. A creek refers to a smaller stream and is not a classification for landforms. A canyon, while another type of valley carved by water, often refers to larger and more expansive formations than what is commonly considered a ravine. Therefore, ravine is the most accurate term for the question posed.