A challenging theme this week! The week is almost over, and there are only three entries so far (not including mine).

Even the theme's submitter hasn't posted an entry this week.

I couldn't come up with a suitable entry either, given the description of the theme. So I thought I'd stretch the criteria a little.
My two photographs were taken slightly over two years apart, the first one on 11/8/2007 and the second one on 11/10/2009. In fact, I did also visit this exact location on approximately the same date in 2008, the year in between. But I distinctly remember the scene being not worth photographing that day because there was not much water flowing and the pool was completely obscured by fallen leaves. Personally, I feel that the latter photograph is the better of the two compositions for three reasons. First, the lighter branch just to the left of the large rock in the first photograph is a slight distraction to my eye ... it just doesn't seem to fit in well with the rest of the scene. This branch, as I recall, was still there in 2008, but had apparently been washed away by a flash flood at some point between then and the date of the second photograph in 2009. Secondly, in the second photograph, the new element of the lighter twigs or exposed roots under the water in the pool adds interest to the composition. Lastly, there is more water flowing over the small cascade in the second photograph, which also adds more appeal to this composition in my opinion.
Canon 5D
Canon 24-105mm f/4L IS
Polarizer
28mm, f/14, 6.0 seconds, ISO 100
Comments
5 commentsCanon 16-35mm f/2.8L II
Polarizer
27mm, f/20, 5.0 seconds, ISO 50