That makes me remember a dream I often have. It's always quite nice for the first part, then can change tone quite sharply. Thinking about it, I wonder if the change is related to any stress I am under at the time.
Anyway, it usually starts off with me walking along a street somewhere - I don't know where, but I can remember it strongly. It's the right-hand side of the street. Sometimes it is cobbled, sometimes it has paving slabs. It used to be that I would be walking with someone, usually my father, but recently I've been alone.
After a while my feet start to lift behind me and I float a little way above the ground for a time, then I land again. I discover that can make this happen at will; if I jump, can fly really high, way above the houses. I fly out towards a park. There are people in the park, some playing football, others are eating in the shade of the trees. The park is right by the sea, but the water is fresh, like a large lake. Most of the shore is a reasonably sharp drop of a foot or two but there is a hill and a cliff to the right. To the left, there is a narrow river flowing to the sea. There may be rocks above the surface, but it also may be perfectly smooth. There's an island about half a mile out to sea with a lighthouse on it. There aren't any rocks out there that I can see.
I fly around the park for a while, dipping under the trees, playing air-football. If it's a good day, the dream ends there. If not, then I fly out to sea. Sometimes I fly back up the river. At some point, I can't stay airborne and fall out of the sky into the water, where I can't get out. After that, the only thing I can remember is the panic of not being able to escape. I never drown, I just float.