The blood_gulch.zip file you have requested: Maps Levels Missions / Others / A to B Titles / Blood Gulch - 2.56mb is not available. Perhaps try browsing all files for the game Counter-Strike: Source and upload any files you want to share or are missing. This is the only information we could locate:
Halo's Blood Gulch map remade for Counter Strike: Source! Added water to discourage camping in the bases (and because it looks so good). Please host if you have a server!