Sorry if I was confusing. A tryptich (sp) is a three part painting each an individule painting yet the three are related to each other (background, theme, event or something else.) I thought you might be able to show a journey of water from the snows of the mountain peaks downstream through falls, rapids, streams to rivers and finally the sea itself. Pick as many as you want, tryptich is just a term. In fact you could frame each of these and do a diagonal slope to the pictures with the mountains as the highest and the sea as the lowest.
Anyway, just an idea for getting the photo salable.