Gimp - blending between layers controlled by heightmap

Well, let me explain my question.

Let's say, I have gray-scaled height map and ten layers with different diffuse textures or solid color textures.

I would like to blend these texture layers by heightmap, so if heightmap pixel is white, then it will show layer 10, if black, layer 1, and if something between it will show a layer between.

Yes, it's like a terrain where on top there is a snow texture, and at the bottom, there is a water texture.

Thanks for answer :)