Modelled fluvial flood depth and climate change depth difference data created 2004: 0.1 percent annual chance for grid reference SZ

The depth difference dataset (2004) is a depth grid showing the difference between modelled fluvial flood depths and modelled fluvial flood depths under climate change conditions (an increase in peak flows of 20%).

Modelled fluvial flood depth and climate change depth difference data* was created for both the 0.1% annual chance of flooding situations and was produced as a by-product from the 2004 generalised modelling project. The purpose of the generalised modelling project was to fill the gaps where there was no detailed local modelled data in 2004, in order to define the extents of Flood Zones for spatial planning.

A two-dimensional hydrodynamic model called JFlow was used to produce both the modelled fluvial flood depth and modelled fluvial flood depth with climate change data. This depth difference data, using these 2 datasets, is provided on a 5x5m grid.

Since 2004, some local detailed modelling projects have included scenarios for climate change however this depth difference dataset has not been updated.

INFORMATION WARNING: This data is not suitable for identifying whether an individual property will flood due to climate change, for detailed decision making or for use in site specific Flood Risk or Strategic Flood Risk Assessments. Where this data is used further evidence, verification and studies should be undertaken. Climate change allowances have changed since this work was completed in 2004.

More recent, accurate and local detailed modelling depth data with climate change is available for some places. Please contact your local Environment Agency office to see if detailed modelling is available for your area of interest.

This metadata record is for Approval for Access product AfA480 2004 1 in 1000 Fluvial Depth Grid Climate Change Difference

Modelled fluvial flood depth data with climate change are available for the whole of England, however this data is for the 100x100km squared Ordnance Survey National Grid reference SZ. If you are interested in data for another grid reference refer to this Ordnance Survey National Grid document to find the relevant referencing code and search on Data.gov.uk again to download the data. Attribution statement: © Environment Agency copyright and/or database right 2016. All rights reserved. Some features of this information are based on digital spatial data licensed from the Centre for Ecology & Hydrology © NERC (CEH). Defra, Met Office and DARD Rivers Agency © Crown Copyright. © Cranfield University. © James Hutton Institute. Contains OS data © Crown copyright and database right 2015. Land & Property Services © Crown copyright and database right.

深度差异数据集（2004年版）展现的是在模型化河流洪水深度与气候变化条件下模型化河流洪水深度之间的差异（峰值流量增加20%）。该模型化河流洪水深度与气候变化深度差异数据，旨在0.1%年一遇的洪水情况下生成，并作为2004年通用建模项目的副产品产生。通用建模项目的宗旨在于填补2004年未详细建模数据区域的空白，以界定洪水区域的范围，服务于空间规划之需。采用名为JFlow的二维水动力模型生成模型化河流洪水深度及其气候变化下的模型化河流洪水深度数据。此深度差异数据基于上述两个数据集，以5x5米的网格形式提供。自2004年以来，部分地方详细建模项目已包含气候变化情景，然而此深度差异数据集尚未更新。信息警示：本数据不适用于判断单个物业是否会因气候变化而洪水，不适宜作为详细决策的依据，亦不宜用于特定地点的洪水风险或战略洪水风险评估。在使用本数据时，应进行进一步的证据验证和研究。自2004年工作完成后，气候变化允许的幅度已发生变化。对于某些地区，已有更近、更准确且更详细的局部建模深度数据，并考虑了气候变化因素。如需了解您感兴趣区域的相关数据，请联系当地环境局办公室以确认是否有详细建模数据可用。本元数据记录为AfA480 2004 1在1000河流深度网格气候变化差异的访问批准产品。带有气候变化的模型化河流洪水深度数据适用于整个英格兰，但本数据仅针对100x100公里平方的军事情报局国家网格参考代码SZ。如需其他网格参考代码的数据，请参阅军事情报局国家网格文档以获取相关引用代码，并在Data.gov.uk上再次搜索以下载数据。归属声明：©环境局版权和/或数据库权利2016。版权所有。本信息的一些特性基于从生态学和水文学中心（CEH）许可的数字空间数据。©自然资源和环境部、气象办公室和河流管理局©皇家版权。©克兰菲尔德大学。©詹姆斯·哈顿研究所。包含OS数据©皇家版权和数据库权利2015。土地与产权服务©皇家版权和数据库权利。