Surface Water Flood Maps (FRM_FH_SURFACE_WATER_DEPTH_M)

The following probabilities are available for surface water flooding: - High - 10 year return period - Medium - 200 year return period - Low - 200 year return period plus climate change using the UKCP09 high emissions scenario for the 2080s.The surface water 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.地表洪水（surface water flooding）的概率分级如下： - 高概率：10年一遇重现期 - 中概率：200年一遇重现期 - 低概率：2080年代采用英国气候预测2009（UKCP09）高排放情景下，200年一遇叠加气候变化影响的场景 地表洪水灾害图（surface water hazard map）将展示（如可获取）以下内容： - 淹没范围 - 淹没水深 - 适宜场景下的洪水流速 本气候变化情景基于英国气候预测2009（UKCP09）针对2080年高排放情景的95%分位数预测结果划定。本次选取中、低概率洪水事件，以契合苏格兰规划政策（Scottish Planning Policy）中采用的重现期标准；而高概率事件的选取则依据近数十年间已观测到的实际洪水事件特征。