Skandi Rogers wrote: you need to build it up above the water level or it will be too wet to grow anything.
Skandi Rogers wrote: I'm thinking you are going to access it by a bridge with a drawbridge maybe? (I'll be upset if you don't style the chicken coop after a castle by the way!) because going out to chickens twice a day by boat and needing to get in a boat every time you want a carrot would soon get old.
Skandi Rogers wrote:For us around 1/2 acre will grow everything for a family of 4 including potatoes and large plants like squash, and things like strawberries for jam for the entire year. You many not wish to grow so much but space really is something you rarely wish you had less of.
Jay Angler wrote:I think that a lot of animals can actually swim either out of choice, desperation, accident or desire to get to what's on that island!
That's the hard part because so much of "permaculture" is trying to hold water on the land, I only see positive things. If you're willing and able to accept the "gifts" the moat-shaped pond will give you, rather than being disappointed when what you envisioned in advance doesn't quite happen, I think you will produce a net benefit. One "problem" with ponds is that the water will evaporate or seep into the ground (if it's not well enough sealed with clay etc) compared to holding the same amount of water in a sealed tank, but "problem" is in quotes because humidity is sometimes a good thing for plants and even in the "Greening the Desert" series (Geoff Lawton) you see "water features" because they grow biomass and clean grey-water.
I'd love to know the downsides of the moat - if I anyway want a pond of that size, how does it hurt to make it in the moat shape?
Thomas A. Cahan wrote:... look up Irish ring fort! - larger than proposed project, but inspiring... every homestead needs a pond/ponds - sounds like moat/ring pond would be even better idea... if original useage doesn't quite pan out many more will come to mind.
Kathleen Sanderson wrote:There are a lot of useful aspects to your idea, even if not altogether what you were hoping when you first mentioned it. I have a small pond on my property, and I've been thinking about putting an island in the middle of it, primarily to contain a clump of bamboo -- we are in zone 6b, and can grow several kinds here, but I don't want to turn running bamboo loose on the neighborhood, either. It's just that it's such a useful plant, I'd really like to have some. My pond is old and needs to be re-dug, and the material could just be dumped in the middle to form the island.
Then you have all those edges where you could grow plants that like wet ground, like asparagus, rhubarb, horseradish, and many other edible marsh plants.