Blackwater Docks is a map in the multiplayer mode in Up Your Arsenal. It takes place in a unique area of Blackwater City. It consists of four platforms around an inaccessible central structure. The bottom left and right platforms are linked by a bridge, while the bottom left platform has steps leading up to the top left platform, and the top right platform has both a jump pad leading up to the top left platform and a versa-target connecting it to the bottom right platform. The top left platform is the largest, and is elevated higher than the rest. During Capture the Flag, the red team's flag is located on this elevated platform, while the blue team's flag is located on a platform in the lower right.
The item placement around the map varies widely. Though both the top left and bottom right platforms have a usual Gravity Bomb and Blitz Gun, nearby platforms have different items. The top right platform has a Minirocket Tube, Charge Boots, Mine Glove, and a nanotech crate, while the bottom left platform has a Lava Gun, Charge Boots, and a nanotech crate. The bridge connecting the bottom two platforms has a Morph-o-Ray along it, while the steps connecting the bottom left platform to the top left platform has a Flux Rifle.