Estimated long-term aggradation (+) or degradation (-) (ft/m) - Right Overbank
The estimated long-term change in the elevation of the right overbank section under the bridge/culvert over the service life of the structure.
Enter aggradation values as (+) and degradation values as (-). The primary source of information regarding long-term changes in the stream channel
and floodplain is typically the stream morphology report and bridge inspection records. Refer to Chapters 11 and 14 in the Office of Structures H&H Manual
for guidance on evaluating aggradation/degradation.