The JBA Trust wave tank shows how different combinations of coastal defences and wave and tide conditions affect the potential for overtopping and flood risk. Over-topping rates can be measured for the following defences and conditions: - beach during a storm surge - vertical and recurved sea walls - stepped and sloped revetments - rock armour - submerged near-shore breakwater For further details, please see https://www.jbatrust.org/how-we-help/physical-models/wave-tank/. Please use, share and adapt this resource with attribution to JBA Trust. This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.