okay
maybe i should stick a map making thread idk what do you guys think? anyway here's how you make water
Use the block tool to make well a block of what will be your water
place it were you want and make sure it stays a block, you cannot make it slanted etc
get out the texture tool and apply the nodraw texture to all sides but the top
for the top texture choose a water texture of your choice and apply it to the top only.. the rest should still be nodraw
now you need an entity called the water_lod. Just place it by the water or on top is fine. no changes are required for the entity as it just controlls the way the water changes quality...
then place another entity called env_cubemap on top or by the water
open up the entity's properties and go to the second option and click the pick button and select the top of the water.
now when you compile your map you should have working water ^^
if you need help on this just post here i'll help yeh