Dreaming of water can often symbolize emotions, the subconscious, or life changes. In your dream, the water carrying your child away might suggest feelings of vulnerability or fear about losing control over something or someone you care about deeply. It could also represent a significant change or transition in your child's life, or even your own life, that makes you feel anxious or uncertain.

The fact that in the dream your child did not die may indicate a sense of hope or reassurance—even when faced with challenges or fears, there is still a possibility for safety and survival. This could be a reflection of your subconscious reassuring you that, despite your worries, things may turn out okay in reality.

Consider reflecting on any current situations in your life that may be causing you stress or concern regarding your child or loved ones. It might also be helpful to explore ways to address these feelings in your waking life.