This was captured at the Perimeter Highway, with the Red River cresting and flood waters moving extremely fast towards the north. It didn't turn out as I was hoping as there were few clouds in the sky, but I like the color nevertheless. A 10-stop ND filter slowed the exposure down to 51 seconds, resulting in silky smooth waters and some movement in the clouds.
I tried another approach last month, at that point opting for a black and white rendition. It offers a very different feel, but you can still get a feel for the water's momentum.