Watershed. The water here was coated with duckweed, and the scene was overwhemingly GREEN. So I created a b&w layer, brought in some of the original colr, and shifed the hue to ward brown. I put a version on Panaramio that is just partially desaturated.
I liked this enough to post the full size version here, if you click on it you should be able to see the bigger version.