Modelled fluvial flood depth and climate change depth difference data created 2004: 1 percent annual chance for grid reference TG

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 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 100 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 TG. 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）系一幅深度网格图，展示了在气候变化条件下（峰值流量增加20%）模拟的河川洪水深度与模拟的河川洪水深度之间的差异。该模拟的河川洪水深度与气候变化深度差异数据*适用于1%年发生概率的洪水情形，并作为2004年通用建模项目的副产品产生。通用建模项目的目的在于填补2004年无详细本地模拟数据区域的空白，以便为空间规划定义洪水区域的范围。采用名为JFlow的二维水动力学模型生成了模拟的河川洪水深度以及考虑气候变化的模拟河川洪水深度数据。这些深度差异数据，基于这两个数据集，以5x5米的网格形式提供。自2004年以来，一些地方性的详细建模项目已包含气候变化情景，但本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，不适用于详细决策或用于特定地点的洪水风险或战略洪水风险评估。使用本数据时，应进行进一步证据收集、验证和研究。自2004年本工作完成后，气候变化允许的额度已发生变化。对于某些地区，有更近、更准确且更详细的本地模拟深度数据，包含气候变化信息。如需了解您感兴趣区域的详细建模情况，请联系您当地的环保局办公室。本元数据记录为AfA480 2004年1%年发生概率河川深度网格气候变化差异的访问批准产品。包含气候变化的模拟河川洪水深度数据适用于整个英格兰，但本数据针对的是100x100平方公里的军用地形网格参考TG。如需了解其他网格参考数据，请参阅本军用地形网格文档以查找相关引用代码，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。© NERC。Defra、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。