No, I'm not modeling Nature's Wonderland in the winter with a frozen river! For water, I'm using a material called Mod Podge, which you can get at just about any craft store. When applied, it is completely white. As it dries it becomes clear and glossy. When this shot was taken, it was a few days after it was poured, since you can see some clear areas. It'll probably take about a week for it to become completely clear.