Which of the following describes a stream that may only flow temporarily after significant rainfall events?

A stream that flows temporarily after significant rainfall events is best described as a non-perennial stream. This term emphasizes that the water flow is not constant and depends on external factors, primarily precipitation. During dry periods, these streams may be completely dry or contain very little water.

In hydrology, non-perennial streams can often be confused with other terms, but the key characteristic that sets them apart is their reliance on rainfall to maintain flow. Perennial streams flow continuously throughout the year, while intermittent streams may have periods of flow interspersed with dry spells but generally have a more predictable pattern than non-perennial streams. The term enduring stream is not commonly used in hydrology, which can add to the confusion in identifying the correct characteristic. Thus, understanding that a non-perennial stream does not flow year-round and is dependent on rainfall is critical in interpreting water flow patterns.