Surface Water Flood Maps (FRM_FH_SURFACE_WATER_DEPTH_H)

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.本次公开的地表洪水（surface water flooding）概率分级如下： - 高概率：重现期10年的洪水事件 - 中概率：重现期200年的洪水事件 - 低概率：考虑2080年代英国气候预测2009（UKCP09）高排放情景下气候变化影响的200年一遇洪水 本次地表洪水灾害风险图（若可获取）包含以下内容： - 洪水淹没范围 - 洪水水深 - 适用场景下的洪水流速 该气候变化情景基于英国气候预测2009（UKCP09）针对2080年代高排放情景的95%分位数预测结果制定。中、低概率洪水事件的选取参考了苏格兰规划政策中采用的重现期标准；高概率洪水事件的选取则贴合近数十年来观测到的实际洪水事件特征。