Lake Terrain (picture replica)

This is also my entry for the Terrain Challenge I started but I figured I'd put it here too so more people would see it

Damn, nice.
The only things I dont like are the lack of height variation on the shallows area and the stump in the middle of the water.

How do you mean?
Please tell me, too small, too big? It's all on random height var IMO that makes it look more natural.
EDIT: You do realize there's a stump in the middle of the water in the picture? (or is that just a bit of log, I can't quite see it properly XD)