Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Hydropower Station Free.
This is the basic version of our Hydropower-station scene.
Collision meshes for ground and walls are also included.
This package contains a static skydome.
Animated textures for water und waterground with texture animation scripts are included.
Texture sizes between 512×512 to 4096×1024.
This scene is not(!) created with the Unity-terrain.
An example of the scene as executeable can be downloaded here:
Works with Unity 3, 4, 5 and 2018.