An even better stream for 15mm wargaming

I've continued my mad experiments with various terrain features, searching for flexibility with as much realism as possible. While one of my experiments for a stream showed some promise, I wanted to continue down that path with sand as the base and wanted to do a longer length to make sure it wouldn't fall apart with handling.

Well, I'm very happy with how this is turning out. Parts of it still aren't completely dry (thus the "milky" areas, but it's looking pretty good. The closer you look, the more detail you see, and the glossy surface gives a look of water from just about every angle.

See what you think.

On the right is the original prototype using larger stones and lighter colored HO scale railroad ballast to fill in the gaps.  On the left is the new section, using sand as the base. The sand has little rocks and pebbles in it, so you don't need to add anything. It also takes on a pretty realistic color (seeing as how most stream beds have sand in them...)

Here's an angle with a battalion of French approaching the bubbling brook.

This angle shows some of the detail better.

The "milky" spots will go away once it's completely dry. 

Overhead angle...

Far away to get a better sense of how it looks from a distance.

A close-up. Makes me want to start looking for fish.

I plan on making many more of these to fill up my terrain shelf. This was the look I wanted when I started out, and after several tries, have a stream that meets my requirements.
They are a bit time-consuming to make, but worth the effort.
What do you think?