Coastal Design Sea Levels - Coastal Flood Boundary Extreme Sea Levels (2018)

This metadata record is for AfA product AfA 010. Extreme Sea Level values is part of Coastal Design/Extreme Sea Levels,a GIS dataset and supporting information providing design / extreme sea level and typical surge information around the coastline of the UK, including England, Wales, Scotland, Northern Ireland, Isle of Man and Jersey. The information is relevant under present day (year 2018) conditions and does not account for future changes due to climate change, such as sea level rise. This is a specialist dataset which informs on work commenced around the coast ranging from coastal flood modelling, scheme design, strategic planning and flood risk assessments.

Extreme Sea Level values describes the extreme sea levels for 16 different annual probabilities of exceedance. Confidence levels relating to the 5% and 95% lower and upper bounds of confidence are included. Mean High Water Spring (MHWS) and Highest Astronomical Tide (HAT) predicted tide levels are also included in the dataset for some sites but may not be used for navigational purposes.

This 2018 update to the Coastal Design Sea Levels dataset was carried out in partnership for the UK Coastal Flood Forecasting partnership, which includes the Environment Agency (EA), Scottish Environment Protection Agency (SEPA), Natural Resources Wales (NRW) and the Department for Infrastructure Northern Ireland (DfINI).

A bundle download of all Coastal Design Sea Levels datasets is available from this record. Please see individual records for full details and metadata on each product. Attribution statement: © Environment Agency copyright and/or database right 2019. All rights reserved.

本元数据记录针对AfA产品AfA 010。极端海平面值是海岸设计/极端海平面的一部分，该GIS数据集及其相关信息提供了围绕英国海岸线（包括英格兰、威尔士、苏格兰、北爱尔兰、马恩岛和泽西岛）的设计/极端海平面和典型涌潮信息。该信息适用于当前（2018年）的条件下，并未考虑由于气候变化导致的未来变化，如海平面上升。这是一个专业数据集，它为沿海地区的工作提供了信息，这些工作包括沿海洪水模拟、方案设计、战略规划和洪水风险评估。极端海平面值描述了16种不同年度超越概率的极端海平面。包括与5%和95%置信区间下限和上限相关的置信水平。对于某些站点，数据集中还包括了平均高潮春潮（MHWS）和最高天文潮（HAT）预测潮位，但可能不适用于导航目的。此2018年对海岸设计海平面数据集的更新是在英国沿海洪水预报伙伴关系下进行的，该伙伴关系包括环境局（EA）、苏格兰环境保护局（SEPA）、自然资源威尔士（NRW）和北爱尔兰基础设施部（DfINI）。可通过此记录下载所有海岸设计海平面数据集的捆绑包。请参阅各个记录以获取每个产品的完整详情和元数据。归属声明：© 环境局版权和/或数据库权利2019。版权所有。