Ibn Sirin
Troubled Waters — Islamic interpretation
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions — entry "troubled waters" (page 449).
Swimming in troubled waters or in high tides in a dream means adversities, or having to face a strong opponent.
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.
These interpretations are reflective and cultural — not predictions, and not medical, psychological, financial, or other professional advice.