A reconnaissance survey of channel bank particulate phosphorus concentrations, controls and estimated contributions to riverine loads across England

Channel banks can contribute a significant proportion of fine‐grained (20% of the riverine total PP load increased from 15 to 25 (corresponding range of 17–35 using the 25th and 75th percentiles of measured TP concentrations). Collectively, these 25 waterbodies account for 0.2% of the total inland WFD waterbody area comprising England. The assessment and, where necessary, improved management, of particulate phosphorus loss from eroding channel banks at catchment and strategic scale is important for water quality protection and provision of ecosystem services. A reconnaissance survey of the total phosphorus content of channel banks was undertaken at national scale across England and the new information generated was employed to update estimates of the relative contributions of bank‐derived inputs to riverine total phosphorus loads