How to Add a River in Unreal Engine
Rivers can be tricky and will not look right until you learn this one property that makes a huge difference.
Plugins
Landmass
Water
Adding a River
In the Place Actors pane or Add Actor button, search for "Water Body Lake".
Add it to your landscape
- Tip: When you add the river, note the direction the water is flowing and be sure to position it so the water is flowing the way you want.
Important: Your landscape will be altered by the river. You might not want this. To prevent altering the landscape, look in the Details tab > Terrain section > Uncheck "Affects Landscape".
Use the spline points (and add new ones) to position your river.
Change the Water's Color
Changing a river's color is the same process as changing a lake's color. You can find the steps here.
Tips
You can angle sections of the spline downward to create waterfalls. If you do this, you can also adjust the Water > Velocity property of the spline point at the top of the waterfall.
You may also need to adjust the height of your spline points as your river continues down your landscape and gets lower and lower.