Rules Index | GM Screen | Player's Guide

Chapter 10: Game Mastering / Environment / Aquatic

Currents and Flowing Water

Source Core Rulebook pg. 512 2.0
Ocean currents, flowing rivers, and similar moving water are difficult terrain or greater difficult terrain (depending on the speed of the water) for a creature Swimming against the current. At the end of a creature’s turn, it moves a certain distance depending on the current’s speed. For instance, a 10-foot current moves a creature 10 feet in the current’s direction at the end of that creature’s turn.