River Flood Maps (FRM_FH_RIVER_DEPTH_L)

These maps have been produced to meet SEPA’s duty to publish flood hazard maps as set out in the Flood Risk Management (Scotland) Act 2009. The maps show where there is a risk of flooding from the sea, from rivers and from surface water.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.本套洪水灾害地图系依据《2009年洪水风险管理（苏格兰）法案》中苏格兰环境保护署（SEPA）的法定发布义务编制而成。本套地图标注了海洋、河流及地表水引发洪水的风险区域。针对河流洪水，现有以下三类概率等级的灾害场景： - 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，以及结合2080年代英国气候预测2009（UKCP09）高排放情景的200年一遇洪水叠加气候变化影响的场景 河流灾害地图将展示以下信息（如可获取）： - 洪水淹没范围 - 洪水水深 - 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95百分位预测结果设定。中、低概率洪水场景的选取遵循苏格兰规划政策中采用的重现期标准，而高概率场景的选取则贴合近数十年间已观测到的实际洪水事件特征。