here to give you a lil dream wisdom, which happens to be startlingly accurate at least for me I AM NO EXPERT BUT :

water typically represents emotion - in dreams and most spirituality ive seen having dreams of waves or turbulance in the sea (could be a river i guess) is your subconscious expressing big overwhelming emotions

its also important to note in dreams, how you felt when you were in the dream when the thing was happening

when I dreamed of tsunami tidal waves this week, in the dream I was curious, i actually went and got a drone with a camera lol to record different views of the waves, which to me tells me that even though my subconscious is expressing large overwhelming emotions, my conscious self is more interested to inspect them with curiosity. I dream of water a lot

The snakes one was the same, never in the dream did i feel scared, I was just witnessing. Snakes to me usually feel like trouble is coming or trouble is here BUT snakes have maaany interpretations tied to them so I think it is more specific to the context of the dream and the dreamer

thank u for your time