For you in your dream, this river represents safety and life support. From the state of swimming in it, you can see that you are quite recognized for this environment.
However, there have been waves in the originally calm environment recently, but there are no obvious crisis events. Therefore, your realistic consciousness is sensitive to some recent changes around you, and it is not excluded that the personnel adjustment in the work unit has an individual impact on you.
There are two symbols in your dream, the pier and the cat.
Pier symbolizes the basis of your means or methods to deal with external things. Let me give you an example: for example, you are the head of a department in your unit, which is the main means for you to handle foreign work, and the members of the department are the foundation.
The one-eyed cat that finally appeared in your dream looks terrible from the description in your dream, but your description basically shows its essence. First, the lack of an eye can be understood as incomplete consideration; Second, the cat's size and attack power are at most skin injuries for you; Third, cats are not good at swimming, and jumping into the river to attack you is to die;
Therefore, if this cat represents a person or colleague who threatens you in reality, the threat that this person can make to you is just to catch you off guard and won't cause you too much harm.
From your dream, I can see that you are a sensitive person. You usually pay more attention to the changes of things around you, and you are also a relatively safe type to deal with interpersonal relationships. But you may be too cautious when considering things, which leads you to be too cautious about some small problems around you.
From the perspective of your dream as a whole, even if something happens in reality, it will not pose a great threat to you.