We had several projects this Summer for our property.

One was to move the pump for our lawn irrigation system out of the flood plain. This meant we had to construct, or rather hire someone to construct a new pumphouse. We are quite pleased with the result, as it not only houses the pump permanently so that we don't have to remove it each Fall and store it in the barn until Spring when it was returned to the river bank. The structure also has enough room to store some garden tools, and a container of fish food.

You see, some new friends gave us a couple dozen koi from their pond, and now we have the enjoyment of watching the native fish (catfish, bluegills and minnows) in our pond, we also have the pleasure of watching the flashes of color that the koi make as they dart about seeking the pellets and Japanese Beetles we throw in for them.

Of course, with ownership comes responsibility:

We decided that the pond needed to be aerated in the Winter. It always freezes over, and that prevents an exchange of oxygen for the aquatic critters. When Lee saw how effective the windmill was for Bill Porter (Porter's Orchids) for his pond, he did the research and ordered a 24' high structure. That sounds high, until you see it dwarfed by the trees that are around it. But that was as high as this type is made, and we found it effective -- once the leaves of the trees were gone!

We had our Jack-of-all-trades, Brian, assemble it in our garage. Then it was taken down to the pond and erected.

Once it was erected, we rented a canoe from the livery down the road, and Brian's helper rowed out and dropped the bubbler into the water. (No, he did not fall in, though it looks like he will.)

Now we are happy when there is enough wind to make the turbine spin. We watch the bubbles as they appear on the water surface and know that even if the water freezes over the bubbler, air will be pumped into the water under the ice.
Lee purchased two "decoy" Canadian geese, which were tied to the lines that identified where the bubbler was located, in the eventuality that it would need to be brought up for cleaning and/or repair. The geese would make it easy to find the lines to the bubbler.

The tube that brings the air to the pond is attached to the turbine at one end, then comes down one leg of the windmill and is buried in the ground, making the entrance into the pond under the water. It then goes out to the bubbler.
Of course, the decoy geese might also attract the wild Canadians that frequent the properties along the river, including ours.

The photo below shows such an encounter. The first time the wild ones saw the decoys, they made threatening gestures at them. But once they saw that the decoys weren't in an attack mode, they were just either curious, or started walking away on the ice.