The pools and rivers in "Small World" are very important water-related landscapes in the game, but many players don't know how to place pools and rivers. In fact, what you need to pay attention to when placing pools and rivers is the placement When in water, no matter how high you build your terrain, it will always be at the same level.
How to place the pools and rivers in the small forest world
Water and paths are basically the same concept, but some of the effects of water require its own section.
When placing water, no matter how high up the terrain you build it is always at the same level, which means you can't make waterfalls (hopefully they will add waterfalls at some point), but you can make a lot of other things with water stuff, with the help of other tools.
Using paths, you can place small rocks in water, or grates in buildings (all of which are explained in the paths section) or bridges, although this is more of a building section thing. Water is a basic tool, but if used correctly it can make a scene look better.