EWCO - Flood Risk Management

Spatial data supporting appropriately located and designed woodland creation to help reduce flood risk by slowing flood flows and increasing the retention and infiltration of water on the land.

The layer shows where there is ‘Opportunity for Floodplain’ woodland creation and ‘Opportunity for Wider Catchment’ woodland creation.

Appropriately located and designed proposals can help reduce flood risk by slowing flood flows and increasing the retention and infiltration of water on the land by creating; woodland in the wider catchment – creating woodland here can help to, reduce fertiliser and pesticide usage, protect sensitive soils from disturbance and erosion, increase infiltration and reduce water runoff and intercept sediment and chemical pollutants in run-off, reducing the delivery of pollutants to watercourses.

Floodplain woodland – creating woodland here can act as a permeable partial barrier to a river when in flood, helping to slow flood flows.

Riparian woodland – creating woodland along watercourses can create a buffer between rivers and the adjacent land, reducing water temperature by providing shade and slowing flood flow water delivery to watercourses.

Cross-slope woodland – creating smaller areas (typically shelterbelts) of woodland (all types) across hill slopes can reduce rapid runoff from higher land. Trees also encourage infiltration and increase the soil’s water storage capacity.

Data input sources:
- Spatial prioritisation of catchments suitable for Natural Flood Management (Environment Agency)
- Flood Map for Planning (Rivers and Sea) - Flood Zone 3 (Environment Agency)
- Soil-derived spatial prioritisation of woodland creation for NFM in the wider catchment (Forest Research)

Attributes:
‘LANDSCAPE’ – the targeting category: Opportunity for Floodplain Woodland / Opportunity for Wider Catchment Woodland.
‘AreaHa’ – Area of the feature in hectares. Attribution statement: Contains OS data © Crown copyright [and database right] [year].

本数据集旨在支持合理选址和设计的林地创建，以降低洪水风险，通过减缓洪水流速并增加土地上水的滞留和渗透来达到目的。图层展示了‘洪水平原林地创建机会’和‘更广泛流域林地创建机会’的位置。合理选址和设计的提议能够通过以下方式降低洪水风险：在更广泛的流域内创建林地——在此处创建林地有助于减少肥料和农药的使用，保护敏感土壤免受扰动和侵蚀，增加渗透并减少地表径流，拦截径流中的沉积物和化学污染物，减少污染物输送到水道的数量。洪水平原林地——在此处创建林地可在洪水期间作为河流的可渗透部分屏障，有助于减缓洪水流速。河岸林地——沿水道创建林地可在河流与相邻土地之间形成缓冲区，通过提供遮荫和减缓洪水流速至水道的输水，降低水温。坡向林地——在山丘坡面上创建较小面积的林地（通常是防护林带）（包括所有类型），可以减少高地快速径流。树木还可以促进渗透并增加土壤的水储存能力。

数据输入来源：
- 适用于自然洪水管理的流域空间优先级（环境署）
- 规划洪水图（河流和海洋）- 洪水区3（环境署）
- 土壤衍生的更广泛流域内自然洪水管理林地创建空间优先级（森林研究所）

属性：
‘LANDSCAPE’ - 目标类别：洪水平原林地创建机会/更广泛流域林地创建机会。
‘AreaHa’ - 特征面积（公顷）。归属声明：包含OS数据©英国皇室版权[以及数据库权利][年份]。