Rocky River Bed, full procedural material.

Include Substance Designer source graph (.sbs, Substance Designer 13.1.1 needed) and compiled graph (.sbsar, Free Substance Player needed) 

Files:

•   .sbs
•   .sbsar
•   a set of exported tileable textures (TGA 4096x4096)

Editable parameters:

• Global Surface : Elevation, Elevation Smoothness, Water level, Water Edges Wetness, Water Edges Wetness Distance
• Stones : Scale,Density and Spread for big, medium and small stones
• Sand : Sand level, Sand relief, Dirt Spread, Depot level, Sand Wave Warp Intensity and direction
  
• Organic : Black moss and Leave fragments density