If you dreamed about someone swimming in a lake: Contradictory or confusing situations may get out of control, Desire to try unusual things may cause you to lose those you are used to or people you trust. To see a person swimming in a lake in a dream refers to good works that will be appreciated by people, a good and beautiful life, being in office by using your mind and good luck. Watching someone swimming in a lake in a dream means rewarding successful people around you and being happy.