Last year I went to NC in the fall- leaf peeping time- and painted this summe scene from it.

Actually I wanted to study how many greens I could get, and how far I could go with the following palette because I usually dont use earth colors  :

permalba white   phthalo green   cad yellow lt.   azo green (py 129 i think)    cad red light    raw sienna    as the main body colors 

 I also used tiny amounts of thalo red rose   light red   burnt  sienna   raw umber   black (for mixing green only, not darkening mixtures) arylide yellow   cobalt blue  chromium oxide green.

I also was interested in painting the water because landscapes are new to me, and I have never painted falling water at all. The rocks were actually grey, but to me they didn't "fit" with the summer greens I had chosen, although they did look good with the yellows and reds in my reference photos.