EurOtop revisited. Part 1: sloping structures

The European Manual for the Assessment of Wave Overtopping (“EurOtop”) was issued free on the internet in 2007 and is now used worldwide. The accompanying Neural Network is the governing prediction tool and the Manual itself gives guidance on all aspects of wave overtopping. It was the result of synthesis of existing Dutch, UK and German guidance with new research findings arising out of projects such as the EC FP7 “CLASH” project. During and since writing, the manual team has identified gaps and areas in which other improvements and clarifications could be made. This paper presents a summary of new analysis of existing data on wave overtopping at low and zero freeboards for sloping structures (dikes, levees, revetments). A companion paper revisits vertical structures (Bruce et al., 2013).