There is either a situation where you are in danger of drowning or there is excessive water causing flooding.
Lauri Loewenberg, a professional dream analyst, suggests that if you find yourself feeling suffocated and finding it difficult to breathe, it could indicate that you are heavily invested in a relationship, problem, or way of thinking, to an excessive degree.
According to Loewenberg, take a moment to consider what aspect of your life is deteriorating. It serves as a signal from your subconscious, urging you to address the issue before it fully consumes you and leads to intense feelings of sadness.
Nevertheless, dreams about drowning and flooding can also be a response of your body to sleep apnea. Loewenberg suggests that if these dreams occur frequently, especially if you are overweight, it would be wise to undergo a sleep study to determine and address the issue.