why does my water suck?

This screenshot is taken from underneath my water in the map that I made, the top layer of water looks fine, but there is another layer of water underneath as you can see. can someone give me a solution?

http://img520.imageshack.us/img520/6986/gmwaters0001.jpg

a:
its d70 never use that
b:
its textured on all faces, texture it only on top face

i hope when u search for a water texture u can find more than that.

use nodraw textures

To make it clearer for B, select the brush and give it a NODRAW texture. Then select the top and give it a water texture.

I always draw brushes with the nodraw texture, always.

These men speaketh the truth. It is very good to do this for many reasons. (Optimization, your problem, etc.)