The Agency told us it needed better surface water modelling and mapping and described how its new national flood risk assessment model (NaFRA2), which it expects to be completed by the end of 2024, will help. It expects NaFRA2 will improve its understanding of surface water flood risk as well as more detail for other types of flooding, for example by giving a prediction of the depth of flooding. NaFRA2 uses a different methodology from the previous assessment model, building up an assessment of risk from local models and will allow more accurate tracking of changes in risk over time.29