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.本次可获取的河流水患概率分级标准如下： - 高概率：10年一遇重现期 - 中概率：200年一遇重现期 - 低概率：1000年一遇重现期，以及基于2080年代英国气候预测2009（UKCP09）高排放情景下气候变化修正的200年一遇重现期。 该河流水害地图涵盖（若有对应数据）以下内容： - 洪水淹没范围 - 洪水水深 - 适宜场景下的洪水流速 本次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。中、低概率洪水事件的选取标准与苏格兰规划政策中采用的重现期规范保持一致，而高概率洪水事件的选取则贴合近数十年来实际观测到的洪水事件特征。