Hi Enoza, let me help you with this. Yes, this is a known and common issue when using the Water Body River in Unreal Engine, but we need to test different solutions.
Check the Landscape Layer
- Make sure your river spline is set to correctly interact with the landscape
Adjust “Water Heightmap” Settings:
- Go to landscape editing mode.
- In the Edit Layers section, ensure your river uses a separate Landscape Layer or that the layer is correctly placed in the stack to properly deform terrain below the river.
Adjust Spline Points & Width Properly:
- Your spline points may be too close together or too high above the terrain:
- Move spline points slightly lower, just touching the terrain.
- Increase spline “Falloff” distance to blend the edges smoothly.
- Adjust spline point heights individually if necessary to follow the terrain curvature.
Make sure these settings are properly configured:
| Setting | Recommended Value |
|---|---|
| Affects Landscape | Enabled |
| River Blend Mode | Min or Alpha Blend |
| Spline Falloff Distance | Adjust as needed (e.g. 500-2000 units) |
| Spline Height Offset | Slightly above landscape (just touching) |
| Landscape Edit Layer | Unique layer recommended |
Doc about water system:
Terrain bug:
water system tutorial:
If you are still having difficulties or have new questions, please let me know. Alternatively, could you send the river details so I can review your settings and suggest changes?