Soil water dynamics play a crucial role in the formation of collapsing gullies. A study in China looked at how soil water changes on a collapsing gully slope after rainfall. They found that soil water response varied with slope aspect, position, and vegetation cover. Sunny slopes had faster response times but lower water storage than shady slopes. Upper slopes responded quicker to rainfall but had lower storage compared to middle slopes. Vegetation helped delay soil water response to rainfall but increased water storage. Bare areas without vegetation were identified as potential sources of collapsing gullies. These findings emphasize the importance of soil water dynamics in preventing erosion and suggest ways to improve soil conservation practices.