Why does this happen?
The wind blows and hits the surface of the dam, but the shape of the dam is curved, so the wind goes straight up, as if changing its direction across the surface of the dam.
As a result, a huge amount of wind is ejected at the very top end of the dam.
The wind blows and hits the surface of the dam, but the shape of the dam is curved, so the wind goes straight up, as if changing its direction across the surface of the dam.
As a result, a huge amount of wind is ejected at the very top end of the dam.