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.本次地表洪水（surface water flooding）的概率等级划分如下： - 高概率：重现期为10年 - 中概率：重现期为200年 - 低概率：2080年代采用英国气候预测2009（UKCP09）高排放情景的200年一遇洪水叠加气候变化影响 地表洪水风险地图（若可获取）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；而高概率洪水事件的选取则贴合近数十年间实际观测到的洪水事件特征。