What is the term for a stream that flows only during short periods after heavy rainfall?

The correct term for a stream that flows only during short periods after heavy rainfall is classified as a non-perennial stream. This designation indicates that the stream does not have a continuous flow year-round and is not reliably present at all times; instead, its flow is dependent on specific weather conditions, particularly rain events.

Non-perennial streams are often associated with areas that experience seasonal rain patterns or droughts, contrasting with perennial streams, which maintain a constant flow throughout the year due to consistent water supply from aquifers or other sources. Intermittent streams, while similar, may flow regularly for part of the year but not during dry seasons, indicating a broader flow duration than what is characteristic of a non-perennial stream. Flowing stream is a more general term that does not specifically describe the timing or conditions under which the stream flows. Understanding these distinctions is essential in hydrology and environmental studies, particularly in evaluating ecosystem dynamics and water resource management.