Well, there will be no water effect as on the jpeg, in fact it will be a different dam and the one I plan to make is a lot larger than this one, and it leads me to another problem... as the dam is as high as a building of 40 levels and as I plan to walk on the top of it, I will have to mask the horizon with fog as seen in HL2 single player when we're under the bridge... well maybe i'm too ambitious for a first map hehe... Anyway I will have look to the map DM_Hydro.
i'll give you some newz
thanks a lot guys