Yes... If you look at the pictures, there is a stripe where the color changes anytime you can see the canyon walls. For instance, in the foil picture, there is a change with dark color above the head and lighter below the shoulders. That is the high water point. In the picture where you just see the canyon and a reflection, where the rock fall is toward the back of the canyon at the top of the pile, you see a transition from darker rock to lighter rock, which is the high water point. The level we have been used to for the past 10 years is about half way between the high and low water mark.