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

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 SU. 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.

深度差数据集（2004年）展示的是在模型模拟的河流洪水深度与在气候变化条件下（峰值流量增加20%）的模型模拟河流洪水深度之间的差异。针对0.1%年洪水概率的情况，生成式模拟的河流洪水深度以及气候变化下的深度差数据均得以创建，且作为2004年广义模拟项目的副产品产生。广义模拟项目的目的在于填补2004年未详细模拟的局部数据空白，以确定洪水区域的范围，为空间规划提供依据。利用名为JFlow的二维水动力学模型，对模拟的河流洪水深度及其气候变化下的模拟河流洪水深度进行了生成。这些深度差数据，基于这两个数据集，以5x5米的网格形式提供。自2004年以来，一些地方性的详细模拟项目已包含气候变化情景，但该深度差数据集尚未更新。信息警告：该数据不适用于判断个体财产是否因气候变化而洪水，不适用于详细决策或特定地点的洪水风险或战略洪水风险评估。在应用此数据时，应进行进一步证据的收集、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。一些地区可获得更近期的、更精确的、更详细的模拟深度数据，包括气候变化的影响。如需了解您感兴趣区域是否可获得详细模拟数据，请联系您所在地的环境局办公室。此元数据记录是为AfA480 2004 1产品“千分之一河流深度网格气候变化差异”的访问批准。包含气候变化的模拟河流洪水深度数据适用于整个英格兰，但该数据针对的是100x100平方公里的军事测绘国家网格参考代码SU。如果您对其他网格参考代码的数据感兴趣，请参阅此军事测绘国家网格文档以找到相关引用代码，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。保留所有权利。本信息的一些特性基于从生态与水文中心（CEH）许可的数字空间数据。©自然资源与环境部（NERC）。©气象办公室和DARD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。土地与财产服务©皇家版权和数据库权利。