I was about 15 feet over a moving stream so the water was no smooth clear surface and my Mavic 3 Pro flipped over and dove into the water for no apparent reason. I have read several times that 30 feet is a suggested safe height. I have also flow...
Staying a bit high over water is your friend. The movement of the water can sometimes confuse the sensors and you may get inaccurate readings for altitude from the controller.
If you want to fly really low just be prepared. You may have to save...
I have a Mavic 4 Pro and I want to do hyperlapses of sunrises skimming close to water. Here is an example but in this sequence the drone is 50' to 100' above the water. I'd like to be only a few feet but I have concerns about doing that...