Erosion is a natural process which provides a source of riverine seed bank materials. It allows seed banks to be re-distributed and rejuvenated across different geomorphic features within a river corridor. Erosion mechanisms are generally a combination of highly visible mass failures and less evident fluvial scour or stripping of floodplain surfaces. When considering water quality, mass failure is considered the dominant source of sediment. However, fluvial scour and stripping of floodplain surfaces are capable of contributing as much or more sediment. Thus, scour and stripping may be greater drivers of seed bank dynamics. This study divides the river channel of the Upper Brisbane River into geomorphic features and examines the relationship between these features and their associated seed banks. The aim of the study is to determine the relative contribution of sediment from these features and examine the capacity of erosion mechanisms to form or restructure their associated seed banks. Five surfaces were identified associated with the compound channel of the Upper Brisbane River, with only three of the five features currently reworked by contemporary fluvial processes. These include a floodplain, inset floodplain and active bedload material. Our results indicate that fluvial scour and floodplain stripping from the inset floodplain yielded nearly twice the fine sediment volume as sediments derived from mass failures from the floodplain. These results suggest that the seed banks of the inset floodplain may be more diverse. We will present a characterization of the geomorphic features within the compound channel along with preliminary findings of a seed bank study of the geomorphic features.