looking for a map

im looking a map but cant remember the name, the main feature was a dam with out let pipe and a plunge pool, but no lake, either side had a build with 2 levels. there was a teleport ball which lead to the out let pipe which contained the RPG. it had a tower on one side and a gun emplacement.

i think it was a half life map, but it may have been for opposing force, if any one knows the name of this map please let me know.

Cant help too much but maybe its one of the Mesa levels that White Legion created, I have all three sections of the giant project. Its was called either Mesa 24 or Mesa 36 I believe. Other than that I have no clue what your talking about......