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.本数据集涵盖以下河洪发生概率分级： - 高概率：10年一遇重现期 - 中概率：200年一遇重现期 - 低概率：包含1000年一遇重现期情景，以及基于英国2009年气候预测（UKCP09）高排放情景下2080年代的气候变化修正后的200年一遇重现期情景。 本次河洪风险图可在数据可用时展示以下内容： - 洪水淹没范围 - 洪水水深 - 酌情展示洪水流速。 本数据集采用的气候变化情景，源自英国2009年气候预测（UKCP09）中2080年代高排放情景下95%分位数的预测结果。 中、低概率洪水情景的选取与苏格兰规划政策所采用的重现期标准保持一致；而高概率情景的选取，则贴合近数十年来实际观测到的洪水事件特征。