Backwater Gulch is a landform on Mar Sara.
It has a familiar main to first expansion layout. Early gameplay on this map should feel familiar, and there probably aren't too many early-game threats or difficulties in terms of gimmicky strategies a player needs to worry about. The second expansion, however, features a high ground area that is accessible by two ramps, meaning it can be easily harassed. The center area has two watch towers as well as two high-yield expansions that will be difficult to maintain, and the key to victory in some games could come down to how long a player can hold one or both of these center expansions.
There are two choke points near the expansion.
Blizzard Entertainment. StarCraft II. (Activision Blizzard) Map: Backwater Gulch (in English). 2011.