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

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 TM. 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）展示在气候变化条件下（峰值流量增加20%）模拟的河流洪水深度与未经气候变化条件模拟的河流洪水深度之间的差异。该模拟的河流洪水深度与气候变化深度差异数据针对1%年洪水概率事件进行创建，并作为2004年一般化建模项目的副产品产出。一般化建模项目的目的是填补2004年无详细局部模拟数据的空白，以界定洪水区域的范围，为空间规划提供依据。使用名为JFlow的二维水动力模型生成模拟的河流洪水深度以及气候变化条件下的模拟河流洪水深度数据。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，一些局部详细建模项目已包括气候变化情景，但此深度差异数据集尚未更新。信息警告：本数据不适用于判断单个财产是否因气候变化而洪水，不适用于详细决策，也不适用于特定地点的洪水风险或战略洪水风险评估。使用此数据时，应进行进一步证据收集、验证和研究。自2004年此项工作完成后，气候变化容许度已发生变化。对于某些地区，已有更近、更精确且更详细的局部模拟深度数据，并考虑了气候变化。如需查询感兴趣区域的详细建模情况，请联系当地环境局。本元数据记录为批准访问产品AfA480 2004 1，即每100年一次的河流深度网格气候变化差异。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，但此数据针对的是100x100公里平方的军事测量国家网格参考TM。如需其他网格参考的数据，请参阅军事测量国家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。版权声明：©环境局版权和/或数据库权利2016。保留所有权利。本信息的一些特征基于从生态与水文中心许可的数字空间数据。©英国自然环境研究委员会（NERC）（CEH）。©环境、食品和农村事务部、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。