OK, now that the legal issue has been discussed --
I think whether you could grow waterlilies there will depend on the depth of the water. Different species have different optimum water depths. I believe Lotus can handle deeper waters than waterlilies. Also, I'm pretty sure they both need a relatively still water, so I'm not entirely sure a location near a boathouse would be suitable.
I don't know about the Iris but the water lilies need a heavier clay soil. I lined the bottom of the pot with coffee filters then planted with clay soil. I covered the top of the soil with gravel to help keep the dirt from washing out.
The sand would just wash out of the pots. I got my planting instructions on-line at a water lily site and, since my soil is clay, it was easy for me to do. the site said to just use garden type soil. My lilies did extremely well.
Awesome, ill check into the clay, Thanks for the reply. I can see the clay not hurting anything living since most fish,frogs,turtles. live in or near clay and mud. Just one last question, how bad does the clay murk the water up? If at all.
My Apache and Ouachita blackberry twigs both came in!!!!