River Flood Maps (FRM_FH_RIVER_EXTENT_H)

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.本数据集包含以下河流洪水概率分级： - 高概率等级：10年一遇重现期 - 中概率等级：200年一遇重现期 - 低概率等级：包含1000年一遇重现期洪水，以及结合2080年代英国2009年气候预测（United Kingdom Climate Projection 2009, UKCP09）高排放情景的200年一遇重现期洪水。 河流灾害风险地图（若有提供）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 本数据集采用的气候变化情景，基于英国2009年气候预测（UKCP09）针对2080年代高排放情景的95%分位数预测结果。本次选取中、低概率洪水事件，是为了与《苏格兰规划政策》中采用的重现期标准保持一致；而高概率洪水事件的选取，则契合近数十年来已观测到的实际洪水事件特征。