Lindenschmidt, Karl-ErichAlfredsen, Knut ToreCarstensen, DirkChoryński, AdamGustafsson, DavidHalicki, MichałHentschel, BerndKarjalainen, NiinaKögel, MichaelKolerski, TomaszKorna´s-Dynia, MarikaKubicki, MichałKundzewicz, ZbigniewLauschke, CorneliaMarszelewski, WłodzimierzMöldner, FabianNäslund-Landenmark, BarbroNiedzielski, TomaszParjanne, AnttiPawłowski, BogusławPińskwar, IwonaRemisz, JoannaRenner, MaikRoers, MichaelRybacki, MaksymilianSzałkiewicz, EwelinaSzydłowski, MichałWalusiak, GrzegorzWitek, Matylda KatarzynaZagata, MateuszZdralewicz, Maciej2023-07-052023-07-052022Lindenschmidt, K.-E.; Alfredsen, K.; Carstensen, D.; Chory´ nski, A.; Gustafsson, D.; Halicki, M.; Hentschel, B.; Karjalainen, N.; Kögel, M.; Kolerski, T.; et al. Assessing and Mitigating Ice-Jam Flood Hazards and Risks: A European Perspective. Water 2023, 15, 76. https://doi.org/10.3390/ w15010076https://hdl.handle.net/10388/14763© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).The assessment and mapping of riverine flood hazards and risks is recognized by many countries as an important tool for characterizing floods and developing flood management plans. Often, however, these management plans give attention primarily to open-water floods, with ice-jam floods being mostly an afterthought once these plans have been drafted. In some Nordic regions, ice-jam floods can be more severe than open-water floods, with floodwater levels of ice-jam floods often exceeding levels of open-water floods for the same return periods. Hence, it is imperative that flooding due to river ice processes be considered in flood management plans. This also pertains to European member states who are required to submit renewed flood management plans every six years to the European governance authorities. On 19 and 20 October 2022, a workshop entitled “Assessing and mitigating ice-jam flood hazard and risk” was hosted in Pozna´ n, Poland to explore the necessity of incorporating ice-jam flood hazard and risk assessments in the European Union’s Flood Directive. The presentations given at the workshop provided a good overview of flood risk assessments in Europe and how they may change due to the climate in the future. Perspectives from Norway, Sweden, Finland, Germany, and Poland were presented. Mitigation measures, particularly the artificial breakage of river ice covers and ice-jam flood forecasting, were shared. Advances in ice processes were also presented at the workshop, including state-of-the-art developments in tracking ice-floe velocities using particle tracking velocimetry, characterizing hanging dam ice, designing new ice-control structures, detecting, and monitoring river ice covers using composite imagery from both radar and optical satellite sensors, and calculating ice-jam flood hazards using a stochastic modelling approach.enAttribution 2.5 CanadaEuropean Union’s Floods Directivehydro-electric powerice-jam flood hazardice-jam flood riskspace-borne remote sensingArticle10.3390/ w15010076