Rivers divide the land, which is a symbol of obstacles and boundaries. Swimming means that the dreamer is forced to jump out of swimming because he is looking for emotional support or trying to overcome difficulties, suggesting that the dreamer has no choice but to encounter obstacles, struggle internally, or try to find emotional support or try to overcome difficulties.
Dreaming of escaping from pursuit may imply that the dreamer wants to escape from troubles or does not want to face pressure.
Good luck!