Should I put a pond here?
I'd like to put in small kidney shaped pond (maybe 6'x9') and low waterfall in a corner between the house and screened-in porch. The idea is that it could be viewed from both the porch and the living room. The pond would start about 4' away from the corner (planning on putting an everlow yew there). The one problem I see is that there is a large black walnut tree about 20' out from the corner. Will this cause a problem with being poisonous to plants or fish? I guess I really don't need to have fish (would have a problem with overwintering in Chicago area), but I'd like a few plants and the sound of running water.
For the waterfall, the screened-in porch is only 12" from the ground so I don't want the waterfall too much higher than that. Can I make a small waterfall or spillway that will be effective enough to produce a nice sound?
Any advice? If this isn't a good idea I could go with a fountain instead, but I'd really like to try a pond project.
Here is a link that might be useful: pics