What is an ephemeral channel that carries water only during and for a few minutes after rainfall called?

An ephemeral channel that carries water only during and for a short time after rainfall is referred to as a rill. Rills are typically small, shallow channels formed by the erosion of soil during rainfall events. They are not permanently flowing bodies of water, distinguishing them from creeks, streams, or gullies, which can carry water more consistently or have a more established flow. The transient nature of a rill means it primarily exists to manage and redirect runoff during and shortly after precipitation events. Understanding the characteristics and behaviors of ephemeral channels like rills is critical for proper land and water management, particularly in relation to preventing soil erosion and managing drainage systems.