River Flood Maps (FRM_FH_RIVER_DEPTH_M)

The following probabilities are available for river flooding: - High - 10 year return period - Medium - 200 year return period - Low - 1000 year return period and 200 year return period plus climate change using the UKCP09 high emissions scenario for the 2080s.The river hazard maps show (where available): - Flood extent - Flood depth - Flood velocities where appropriate. The climate change scenario has been defined by United Kingdom Climate Projection 2009 (UKCP09) predictions for 2080 high emissions 95%ile predictions. Medium and low probability flood events were selected for consistency with return periods used in Scottish Planning Policy, whereas the high probability was chosen as it is reflective of observed events experienced over the last few decades.本次河流洪水相关概率分级及数据说明如下： - 高概率洪水：对应10年一遇重现期（return period） - 中概率洪水：对应200年一遇重现期（return period） - 低概率洪水包含两类情景：其一为1000年一遇重现期情景；其二为200年一遇重现期叠加2080年代英国气候预测2009（UKCP09）高排放情景下的气候变化影响的情景。 河流灾害地图（如有提供）将展示以下内容： - 洪水淹没范围 - 洪水水深 - 适宜场景下的洪水流速 本研究采用的气候变化情景基于英国气候预测2009（UKCP09）针对2080年高排放场景的95%分位数预测结果制定。本次选取中、低概率洪水事件以匹配苏格兰规划政策中采用的重现期标准，而高概率洪水事件的选取则反映了近数十年间实际观测到的洪水事件特征。