Lou thanks for you original post. \:\)

No doubt wind has a substantial effect in aerating one of our ponds via wind and current. Because of its shape , topography and orientation wrt the prevailing winds we see currents often in different directions at the same time. The winds move the water in a primary direction and then runs into the ridges and dam and changes to moving water in secondary directions as the wind moves down the ridge/dam thus causing (whatever the correct name) a mixing/whirl effect.