We have been assessing several stream crossings that appear to have been affected by last fall's flooding events. This has caused deposits to buildup TALLER than bankfull heights, and has created bankfulls that appear to be "new" or not natural.
We are wondering if we should be taking bankfulls where the "new" banks are (Where deposits have settled on top of original banks). Or if they should be taken where the original banks were (if that can be determined).
Photo 1: If you look closely, you can see stream bed material dropped on top of eroding banks. More dense deposit photo right.
Photo 2: Original bank extends into photo right eventually to stream. As you follow bank downstream, you can see that it disappears underneath a deposit . Used vegetation growth to guess where original bank likely located.