The USGA Rules of Golf state, “casual water is any temporary accumulation of water on the course that is not in a water hazard and is visible before or after the player takes his or her stance.”
It is important to note that snow and natural ice are either casual water or loose impediments at the option of the player. If your ball lies in casual water, you are allowed free relief from the situation.
The process of taking relief is illustrated by SwingU instructor Ryan Rustand in the video above.
