Flood Map for Planning (Rivers and Sea) - Flood Storage Areas

The Flood Map for Planning (Rivers and Sea) includes several layers of information. This dataset covers Flood Storage Areas. It shows those areas that act as a balancing reservoir, storage basin or balancing pond. Their purpose is to attenuate an incoming flood peak to a flow level that can be accepted by the downstream channel. It may also delay the timing of a flood peak so that its volume is discharged over a longer time interval.
We have assumed that flood storage areas act perfectly and give the same level of protection as when our assessment of the area was carried out. Flood storage areas do not completely remove the chance of flooding and can be overtopped or fail in extreme weather conditions.

This dataset is designed to raise awareness of the likelihood of flooding and to encourage people living and working in areas prone to flooding to find out more and take appropriate action. Attribution statement: © Environment Agency copyright and/or database right 2023. All rights reserved.

Some features of this map are based on digital spatial data from the Centre for Ecology & Hydrology, © NERC (CEH)

© Crown Copyright and Database Rights 2023 OS AC0000807064.

《防洪规划洪水图（河流与海洋）》囊括了多层级的信息。该数据集涵盖了防洪蓄水区。图中标示了那些充当平衡水库、蓄水盆地或平衡池的领域。其作用在于降低入流洪水峰值至下游河道能够接纳的流量水平。同时，它还可能延缓洪水峰值到来的时间，以便其水量能够在更长的时间间隔内排放。我们假定防洪蓄水区运行完美，且在区域评估进行时提供相同级别的保护。防洪蓄水区并不能完全消除洪水发生的可能性，在极端天气条件下，它们可能被洪水漫过或失效。本数据集旨在提升公众对洪水发生可能性的认识，并鼓励居住和从事活动于易受洪水影响地区的人们深入了解并采取相应的措施。归属声明：© 环境署版权和/或数据库权利 2023。版权所有。本图某些特征基于生态水文学研究中心的数字空间数据，© NERC（CEH）。© 王室版权和数据库权利 2023 OS AC0000807064。