Waterfall fountains are a common type of fountain, adding natural interest to urban spaces by simulating the appearance of natural waterfalls. Waterfall fountains can be categorized into two types: single-stage and multi-stage. Single-stage waterfalls have a simple structure, with water falling directly from a height, creating a spectacular waterfall curtain. Multi-stage waterfalls, on the other hand, utilize multiple levels of cascading water to create a richer visual effect.