Unlock comes before the design
Water building starts with the construction capability, not the decorative idea. Confirm the water-building unlock or kit requirement first, then choose a location where the base still has practical access to storage, beds, food, and the production job it is meant to support.
Pathing matters more on water
A water base can look clean but fail if workers cannot move reliably. Before moving rare storage, run a short test cycle with the planned stations, beds, food, and storage. Watch for workers getting stuck, walking too far, or failing to reach the job that justified the base.
Best uses for water bases
Water bases are strongest when they solve a specific problem: safer layout edges, fishing support, scenic main-base design, or route staging near late-game systems. They are weaker when used as a pure decoration project before the core production loop is stable.