Lateral Water Hazards are defined by red stakes and/or lines. Refer Rule 17.1

Rule 17.1 of the Rules of Golf addresses water hazards, stating that if a ball is found in a water hazard, or if it’s known or virtually certain that a ball not found is in the hazard, the player has three options, each for one penalty stroke.
- Take stroke and distance relief by playing a ball from a relief area based on where the previous stroke was made.
- Take back-on-the-line relief by dropping a ball outside the penalty area, keeping point X between the hole and the spot where the ball is dropped
- Take lateral relief from Point X, dropping within two club lengths of where the ball last crossed the edge of the penalty areea, no nearer the hole.