Yes, my pond is 3/4 acre, averaging around 6' in depth (max. depth is right at 12'), and is around 9,000,000 gal. Unlike most large garden ponds and even the vast majority of farm/residential ponds, my ponds is fed by an artesian well, 24/7. That artesian water is potable and of course, cold all year long. I have some cattails and lots of rush growing at the water's edge, but I keep the cattails controlled and they don't take up much room. The only submerged plant that I know of is hornwort, and there's plenty of that. I have fish as well as turtles, tilapia, bream, and largemouth bass. I have hard shell and softshell turtles, but the hard shell are apparently the ones that like to munch on water lilies.
Water hyacinths are highly invasive plants here, as well as throughout the entire SE USA. I have none. It is even illegal to have them in our ponds here in Florida.
Here's a portion of my pond. You can see the artesion water flowing in one of them.
