How is an intermittent stream defined?

An intermittent stream is characterized by having a well-defined channel that experiences seasonal water flow. This means that the stream typically flows for part of the year and may become dry during certain seasons, particularly in times of drought or low rainfall. The presence of a well-defined channel indicates that the stream has a specific course through which it flows when water is present.

Other options describe different hydrological features but do not capture the essence of what defines an intermittent stream. Constant-flow streams would not fit this definition, as they flow year-round rather than seasonally. A stream that only runs during heavy rains would be termed ephemeral, and a shallow trickle of water does not convey the idea of a well-defined channel or seasonal flow characteristics. Thus, the correct understanding of an intermittent stream revolves around its seasonal nature and clearly defined path.