We have lots of gravel pits here that often get flooded by a river and the fish population changes drastically. One of them is a couple miles from the river and hadn't flooded in decades. It was crystal clear and like looking at an aquarium from a boat. Hoards of bluegill of all sizes and a lot of LMB. I know of at least 2 10pound LMB caught out of it. It flooded a few years ago when a dam broke and is completely different now. Very few BG and a rare small LMB. Lots of carp, bowfin, and gar. People also catch a few BH and CC now.
Interesting point about the water color.
The first time I personally saw this particular pond flood was about 7-8 years ago, and it definitely lowered the viz from about 2 feet to less than 1 foot, and it stayed that way. Also, they seem to get dark brown algae blooms in the summer since then as well, which is probably a big part of the summer fish kill 2 years ago, although I wasn't down there at the time that happened so I'm guessing.
I didn't mention it before, but this pond has a constant supply of underground water from a pipe at the upper end- I understand that this water isn't oxygenated, but it is clear.
