It's good to see the Curves theme translated into a beautiful landscape. I never get tired of them. Nice b/w work here with the exquisite curve of the dam and some of nature's natural curves.

I love the combination of man made and natural elements in this. The curve is substantial and complements this image nicely.

I like the combination curve of the falling water and the curve of the dam. A little more definition in the clouds, perhaps. Horizon could be straighter.

I think a tighter crop of the sky would have improved the impact of this one. Good shot though.