Modder ‘Gorgulla’ has released a new mod for Fallout 4 that overhauls its water and all the liquid effects. This mod also adds reflection to effects that didn’t have any reflection before, and covers the water-shader that is on objects when it rains.
Going into slightly more details, this improves water so that it reflects the surface better, packs better liquid effects (everything from foam to caustics, even bloodsplatters), normalizes water color to look as real-life as possible, and comes in 4K and 2K versions.
In order to showcase his mod, Gorgulla released some screenshots that you can find below. Those interested can download the mod from here.